[Bug c++/55131] Segmentation fault happened in resulting code (inline-asm) after upgraded g++ from 3.4.6 to 4.7.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55131
mawenqi mawenqi108 at gmail dot com changed:
What|Removed |Added
Status|RESOLVED|UNCONFIRMED
Component|inline-asm |c++
Version|4.7.0 |unknown
Resolution|INVALID |
Severity|normal |blocker
--- Comment #2 from mawenqi mawenqi108 at gmail dot com 2012-10-30 06:22:07
UTC ---
(In reply to comment #1)
This is not a bug.
The produced assembly looks like:
movl8(%ebp), %edi # %1
movl12(%ebp), %esi# %2
movl0(%esi), %eax
movl4(%esi), %edx
movl(%ecx), %ebx# %3
movl(%eax), %ecx# %4
By the time the last statement happens, eax has already been clobbered. You
never said you are clobber eax in the inline-asm so it chose the 4th operand
as
being eax. You were getting lucky in 3.4.6 with the inline-asm really,
I don't see why you don't use the __sync_* (or even better the __atomic_*)
builtins for doing the compare and swap?
Thanks a lot for your help!
This is the old legacy code. After replaced original implementation with
buildin function __atomic_compare_exchange_n, now everything is fine!
static inline bool MyAtomic_CAS64(volatile unsigned long long* tgt,
unsigned long long* old,
unsigned long long rep)
{
return __atomic_compare_exchange_n(tgt, old, rep,
false, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
}
Thanks again!
[Bug c++/55131] Segmentation fault happened in resulting code (inline-asm) after upgraded g++ from 3.4.6 to 4.7.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55131 mawenqi mawenqi108 at gmail dot com changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Version|unknown |4.7.0 Resolution||INVALID --- Comment #3 from mawenqi mawenqi108 at gmail dot com 2012-10-30 06:25:15 UTC --- As Andrew Pinski said, this is not a bug of GCC.
[Bug middle-end/55132] New: [4.8 Regression] FAIL: g++.dg/tree-ssa/pr45453.C
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55132 Bug #: 55132 Summary: [4.8 Regression] FAIL: g++.dg/tree-ssa/pr45453.C Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassig...@gcc.gnu.org ReportedBy: ubiz...@gmail.com CC: hubi...@gcc.gnu.org r192964 [1] introduced following failure: WARNING: program timed out. FAIL: g++.dg/tree-ssa/pr45453.C -std=gnu++98 (test for excess errors) UNRESOLVED: g++.dg/tree-ssa/pr45453.C -std=gnu++98 scan-tree-dump-times optimized OBJ_TYPE_REF 1 WARNING: program timed out. FAIL: g++.dg/tree-ssa/pr45453.C -std=gnu++11 (test for excess errors) UNRESOLVED: g++.dg/tree-ssa/pr45453.C -std=gnu++11 scan-tree-dump-times optimized OBJ_TYPE_REF 1 Compiler loops in: #0 estimate_calls_size_and_time (size=size@entry=0x70bdf08c, time=time@entry=0x70bdf088, hints=hints@entry=0x0, possible_truths=possible_truths@entry=4294967294, known_vals=known_vals@entry=0x0, known_binfos=known_binfos@entry=0x0, known_aggs=known_aggs@entry=0x0, node=optimized out, node=optimized out) at ../../gcc-svn/trunk/gcc/ipa-inline-analysis.c:3960 #1 0x0093b2d5 in estimate_calls_size_and_time (size=size@entry=0x70bdf08c, time=time@entry=0x70bdf088, hints=hints@entry=0x0, possible_truths=possible_truths@entry=4294967294, known_vals=known_vals@entry=0x0, known_binfos=known_binfos@entry=0x0, known_aggs=known_aggs@entry=0x0, node=optimized out, node=optimized out) at ../../gcc-svn/trunk/gcc/ipa-inline-analysis.c:2768 #2 0x0093b2d5 in estimate_calls_size_and_time (size=size@entry=0x70bdf08c, time=time@entry=0x70bdf088, hints=hints@entry=0x0, possible_truths=possible_truths@entry=4294967294, known_vals=known_vals@entry=0x0, known_binfos=known_binfos@entry=0x0, known_aggs=known_aggs@entry=0x0, node=optimized out, node=optimized out) at ../../gcc-svn/trunk/gcc/ipa-inline-analysis.c:2768 #3 0x0093b2d5 in estimate_calls_size_and_time (size=size@entry=0x70bdf08c, time=time@entry=0x70bdf088, hints=hints@entry=0x0, possible_truths=possible_truths@entry=4294967294, known_vals=known_vals@entry=0x0, known_binfos=known_binfos@entry=0x0, known_aggs=known_aggs@entry=0x0, node=optimized out, node=optimized out) at ../../gcc-svn/trunk/gcc/ipa-inline-analysis.c:2768 #4 0x0093b2d5 in estimate_calls_size_and_time (size=size@entry=0x70bdf08c, time=time@entry=0x70bdf088, hints=hints@entry=0x0, possible_truths=possible_truths@entry=4294967294, known_vals=known_vals@entry=0x0, known_binfos=known_binfos@entry=0x0, known_aggs=known_aggs@entry=0x0, node=optimized out, node=optimized out) at ../../gcc-svn/trunk/gcc/ipa-inline-analysis.c:2768 #5 0x0093b2d5 in estimate_calls_size_and_time (size=size@entry=0x70bdf08c, time=time@entry=0x70bdf088, hints=hints@entry=0x0, possible_truths=possible_truths@entry=4294967294, known_vals=known_vals@entry=0x0, known_binfos=known_binfos@entry=0x0, known_aggs=known_aggs@entry=0x0, node=optimized out, node=optimized out) at ../../gcc-svn/trunk/gcc/ipa-inline-analysis.c:2768 #6 0x0093b2d5 in estimate_calls_size_and_time (size=size@entry=0x70bdf08c, time=time@entry=0x70bdf088, hints=hints@entry=0x0, possible_truths=possible_truths@entry=4294967294, known_vals=known_vals@entry=0x0, known_binfos=known_binfos@entry=0x0, known_aggs=known_aggs@entry=0x0, node=optimized out, node=optimized out) at ../../gcc-svn/trunk/gcc/ipa-inline-analysis.c:2768 #7 0x0093b2d5 in estimate_calls_size_and_time (size=size@entry=0x70bdf08c, time=time@entry=0x70bdf088, hints=hints@entry=0x0, possible_truths=possible_truths@entry=4294967294, known_vals=known_vals@entry=0x0, known_binfos=known_binfos@entry=0x0, known_aggs=known_aggs@entry=0x0, node=optimized out, node=optimized out) at ../../gcc-svn/trunk/gcc/ipa-inline-analysis.c:2768 #8 0x0093b2d5 in estimate_calls_size_and_time (size=size@entry=0x70bdf08c, time=time@entry=0x70bdf088, hints=hints@entry=0x0, possible_truths=possible_truths@entry=4294967294, known_vals=known_vals@entry=0x0, known_binfos=known_binfos@entry=0x0, known_aggs=known_aggs@entry=0x0, node=optimized out, node=optimized out) at ../../gcc-svn/trunk/gcc/ipa-inline-analysis.c:2768 [1] http://gcc.gnu.org/ml/gcc-cvs/2012-10/msg01070.html
[Bug c++/55120] Inaccessible virtual base constructor does not prevent generation of default constructor
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55120 --- Comment #6 from Daniel Krügler daniel.kruegler at googlemail dot com 2012-10-30 07:28:47 UTC --- (In reply to comment #4) I think the standard is unclear on this. That defect report has been queried by experts. Let me clarify that I have not even tried to interpret the standard, but I wanted to get an understanding of what the issue's comment was supposed to mean. These are two completely different things.
[Bug tree-optimization/55133] New: gcc-4.8-20121028 dubious array bound check
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55133
Bug #: 55133
Summary: gcc-4.8-20121028 dubious array bound check
Classification: Unclassified
Product: gcc
Version: tree-ssa
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: nat...@t-online.de
Created attachment 28571
-- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28571
preprocessed file
Please double-check this array out of bound warning with gcc-4.8-20121028:
./compiler/gcc-4.8.0-snap/bin/gcc c1.c -O3 -c -Wall
c1.c: In function ‘main’:
c1.c:15:22: warning: array subscript is above array bounds
[-Warray-bounds]
if (!ab_pid[index])
^
extern unsigned char ab_pid_count,old_rfcb_pid_count;
extern unsigned short ab_pid[16];
extern int found_pid;
int main()
{
unsigned char pid_index = 0;
int index;
for (pid_index=0; (pid_index old_rfcb_pid_count); pid_index++)
{
for (index=0; index ab_pid_count; index++)
{
if (!ab_pid[index])
{
found_pid = 1;
}
};
}
return 0;
}
The warning disappear without the outer loop or with ' unsigned short
ab_pid[32]',
[Bug c/55105] use of LD_LIBRARY_PATH incorrect for AIX -- cause trunk build to fail
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55105 --- Comment #1 from Michael Haubenwallner michael.haubenwallner at salomon dot at 2012-10-30 07:58:20 UTC --- Feels like a dup of bug#52623, or vice-versa. Haven't tried --disable-build-poststage1-with-cxx recently, not sure if this still should work with current trunk.
[Bug debug/54953] [4.8 Regression] New sra-1.c FAILs on powerpc
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54953 --- Comment #4 from Jakub Jelinek jakub at gcc dot gnu.org 2012-10-30 08:08:08 UTC --- Author: jakub Date: Tue Oct 30 08:08:01 2012 New Revision: 192978 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=192978 Log: PR debug/54953 * valtrack.h (DEBUG_TEMP_AFTER_WITH_REG_FORCE): New. * valtrack.c (dead_debug_insert_temp): Use emit_debug_insn_after even for where == DEBUG_TEMP_AFTER_WITH_REG_FORCE. * dce.c (word_dce_process_block, dce_process_block): Pass DEBUG_TEMP_AFTER_WITH_REG_FORCE if insn is needed and therefore not going to be eliminated. Modified: trunk/gcc/ChangeLog trunk/gcc/dce.c trunk/gcc/valtrack.c trunk/gcc/valtrack.h
[Bug middle-end/55132] [4.8 Regression] FAIL: g++.dg/tree-ssa/pr45453.C
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55132 --- Comment #1 from Uros Bizjak ubizjak at gmail dot com 2012-10-30 08:16:40 UTC --- The commit also causes: FAIL: gcc.dg/pr44974.c scan-assembler call[^\n]*_Exit
[Bug rtl-optimization/48374] ICE: in single_succ_edge, at basic-block.h:562 with -fselective-scheduling2 and __builtin_unreachable()
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48374 --- Comment #6 from Andrey Belevantsev abel at gcc dot gnu.org 2012-10-30 08:25:24 UTC --- Author: abel Date: Tue Oct 30 08:25:16 2012 New Revision: 192979 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=192979 Log: Backport from mainline 2012-01-25 Andrey Belevantsev a...@ispras.ru PR rtl-optimization/48374 * sel-sched-ir.h (get_all_loop_exits): Check for zero successors. * gcc.dg/pr48374.c: New test. Added: branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/pr48374.c Modified: branches/gcc-4_6-branch/gcc/ChangeLog branches/gcc-4_6-branch/gcc/sel-sched-ir.h branches/gcc-4_6-branch/gcc/testsuite/ChangeLog
[Bug rtl-optimization/48374] ICE: in single_succ_edge, at basic-block.h:562 with -fselective-scheduling2 and __builtin_unreachable()
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48374 Andrey Belevantsev abel at gcc dot gnu.org changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED --- Comment #7 from Andrey Belevantsev abel at gcc dot gnu.org 2012-10-30 08:26:36 UTC --- Finally fixed in 4.6 too, closed.
[Bug tree-optimization/54985] [4.7/4.8 Regression] dom optimization erroneous remove conditional goto.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54985 --- Comment #11 from Igor Zamyatin izamyatin at gmail dot com 2012-10-30 08:32:01 UTC --- Are there any plans to backport this to 4.7?
[Bug middle-end/54386] [4.8 Regression] Unaligned mem load wrongly generated for inlined inline/static function
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54386 --- Comment #6 from Oleg Endo olegendo at gcc dot gnu.org 2012-10-30 09:04:37 UTC --- Just for the record, this seems to happen only for mem loads. Mem stores expand as expected.
[Bug c++/54988] fpmath=sse target pragma causes inlining failure because of target specific option mismatch
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54988 --- Comment #8 from Oleg Endo olegendo at gcc dot gnu.org 2012-10-30 09:07:17 UTC --- Author: olegendo Date: Tue Oct 30 09:07:08 2012 New Revision: 192982 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=192982 Log: PR target/54988 * config/sh/sh.md (tstqi_t_zero): Rename to *tstqi_t_zero. (*tstmode_t_zero): New insns. * config/sh/iterators.md (lowpart_be, lowpart_le): New mode attributes. PR target/54988 * gcc.target/sh/pr53988.c: New. Added: trunk/gcc/testsuite/gcc.target/sh/pr53988.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/sh/iterators.md trunk/gcc/config/sh/sh.md trunk/gcc/testsuite/ChangeLog
[Bug c++/55058] [4.7/4.8 Regression] Unexpected invalid type conversion error
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55058 Sebastian Huber sebastian.hu...@embedded-brains.de changed: What|Removed |Added CC||jason at gcc dot gnu.org --- Comment #6 from Sebastian Huber sebastian.hu...@embedded-brains.de 2012-10-30 09:18:03 UTC --- If I revert parts of commit 44f861fca343148a1b0720105ec2b7f14bbcc849 diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c index 1ff1c73..8f5b9f7 100644 --- a/gcc/cp/pt.c +++ b/gcc/cp/pt.c @@ -11015,9 +11015,7 @@ tsubst (tree t, tree args, tsubst_flags_t complain, tree in_decl) complain | tf_ignore_bad_quals); return r; } - else - /* We don't have an instantiation yet, so drop the typedef. */ - t = DECL_ORIGINAL_TYPE (decl); + /* Else we must be instantiating the typedef, so fall through. */ } if (type mentioned in http://gcc.gnu.org/ml/gcc/2012-10/msg00399.html then, the test case compiles well.
[Bug target/54963] [4.8 Regression] Wrong code generated for libgfortran/generated/eoshift3_8.c on SH
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54963 --- Comment #8 from Oleg Endo olegendo at gcc dot gnu.org 2012-10-30 09:22:31 UTC --- Author: olegendo Date: Tue Oct 30 09:22:14 2012 New Revision: 192983 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=192983 Log: PR target/54963 * config/sh/iterators.md (SIDI): New mode iterator. * config/sh/sh.md (negdi2): Use parallel around operation and T_REG clobber in expander. (*negdi2): Mark output operand as early clobbered. Add T_REG clobber. Split after reload. Simplify split code. (abssi2, absdi2): Fold expanders into absmode2. (*abssi2, *absdi2): Fold into *absmode2 insn_and_split. Split insns before reload. (*negabssi2, *negabsdi2): Fold into *negabsmode2. Add T_REG clobber. Split insns before reload. (negsi_cond): Reformat. Use emit_move_insn instead of gen_movesi. (negdi_cond): Reformat. Use emit_move_insn instead of a pair of gen_movsi. Split insn before reload. Modified: trunk/gcc/ChangeLog trunk/gcc/config/sh/iterators.md trunk/gcc/config/sh/sh.md
[Bug c++/55131] Segmentation fault happened in resulting code (inline-asm) after upgraded g++ from 3.4.6 to 4.7.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55131 Jonathan Wakely redi at gcc dot gnu.org changed: What|Removed |Added Severity|blocker |normal
[Bug tree-optimization/55085] [4.8 regression] false positive -Warray-bounds
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55085 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution||DUPLICATE --- Comment #2 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30 09:32:45 UTC --- dup. *** This bug has been marked as a duplicate of bug 55079 ***
[Bug tree-optimization/55079] [4.8 regression] false positive -Warray-bounds
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55079 --- Comment #2 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30 09:32:45 UTC --- *** Bug 55085 has been marked as a duplicate of this bug. ***
[Bug tree-optimization/55133] gcc-4.8-20121028 dubious array bound check
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55133 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED CC||hubicka at gcc dot gnu.org Resolution||DUPLICATE --- Comment #1 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30 09:33:03 UTC --- dup. *** This bug has been marked as a duplicate of bug 55079 ***
[Bug tree-optimization/55079] [4.8 regression] false positive -Warray-bounds
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55079 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added CC||nat...@t-online.de --- Comment #3 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30 09:33:03 UTC --- *** Bug 55133 has been marked as a duplicate of this bug. ***
[Bug middle-end/55132] [4.8 Regression] FAIL: g++.dg/tree-ssa/pr45453.C
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55132 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Target Milestone|--- |4.8.0
[Bug middle-end/55130] [4.8 Regression] ICE in insn_rhs_dead_pseudo_p, at lra-constraints.c:3224
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55130 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Target Milestone|--- |4.8.0
[Bug fortran/55134] New: associate construct and assumed size array
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55134 Bug #: 55134 Summary: associate construct and assumed size array Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassig...@gcc.gnu.org ReportedBy: valerywe...@hotmail.com Dear All I get a wrong result when associating an array via an associate construct and passing it as assumed size array to a routine. gcc version 4.8.0 20121018 (experimental) (GCC) program bug implicit none integer,dimension(1)::i i(:)=1 associate(a =i) call foo(a) end associate write(*,*) i contains subroutine foo(v) integer, dimension(*) :: v v(1)=2 end subroutine foo end program bug this gives me ./a.out 1 while I would expect 2 Valery
[Bug libfortran/54012] printf crash with -lgfortran
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54012 --- Comment #3 from Sergey Rodionov astroseger at gmail dot com 2012-10-30 09:52:04 UTC --- What does gdb tell you? gdb tells: Program received signal SIGSEGV, Segmentation fault. 0x7779f8f2 in __parse_one_specmb () from /lib64/libc.so.6
[Bug libfortran/54012] printf crash with -lgfortran
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54012 --- Comment #4 from Sergey Rodionov astroseger at gmail dot com 2012-10-30 09:56:49 UTC --- (In reply to comment #1) Can't reproduce with 4.6.3. Have you compiled with -lgfortran? If yes then probably this bug is some specific problem of Mageia 2 distributive
[Bug c++/55109] internal compiler error: Segmentation fault while reporting error in template function instantiation
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55109 --- Comment #2 from Daniel Mulcahy ZetaetaDaniel at gmail dot com 2012-10-30 10:17:30 UTC --- Reduced test case here https://gist.github.com/3979454, as provided by creduce.
[Bug tree-optimization/55124] [4.8 Regression] ICE in find_or_generate_expression, at tree-ssa-pre.c:2803
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55124
Richard Biener rguenth at gcc dot gnu.org changed:
What|Removed |Added
Target Milestone|--- |4.8.0
Summary|ICE in |[4.8 Regression] ICE in
|find_or_generate_expression |find_or_generate_expression
|, at tree-ssa-pre.c:2803|, at tree-ssa-pre.c:2803
--- Comment #3 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30
10:18:15 UTC ---
Before the revision we were successfully able to insert
Inserted pretmp_46 = c;
in predecessor 4
Inserted pretmp_47 = (int) pretmp_46;
in predecessor 4
while after the revision we ICE.
Simplified testcase:
int a, b;
long c;
static void f2(void)
{
unsigned long k = 1;
foo(b ? k = 0 : 0);
b = ((c = b) ? (k ? : (c = 0)) : a) * c;
}
void f1(void)
{
f2();
a = b | c;
}
[Bug c++/55135] New: Segfault of gcc on a big file
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55135 Bug #: 55135 Summary: Segfault of gcc on a big file Classification: Unclassified Product: gcc Version: 4.4.5 Status: UNCONFIRMED Severity: major Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: benoit.bar...@gmail.com When i compile the given file with gcc, i obtained a segfault: gcc LHA.ii -v Using built-in specs. Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 4.4.5-8' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.4 --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --with-arch-32=i586 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.4.5 (Debian 4.4.5-8) COLLECT_GCC_OPTIONS='-v' '-mtune=generic' /usr/lib/gcc/x86_64-linux-gnu/4.4.5/cc1plus -fpreprocessed LHA.ii -quiet -dumpbase LHA.ii -mtune=generic -auxbase LHA -version -o /tmp/ccDvgh6v.s GNU C++ (Debian 4.4.5-8) version 4.4.5 (x86_64-linux-gnu) compiled by GNU C version 4.4.5, GMP version 4.3.2, MPFR version 3.0.0-p3. GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 5a2e15051eaa06a84cf6320b754ba993 gcc: Internal error: Erreur de segmentation (program cc1plus) The code in LHA.ii is generated which explained why it is so big. The compilation work with similar but smaller file generated by the same program. It also fail on similar and bigger file generated by the same program If the crash is due to the size of the file gcc should return an error instead of a segfault.
[Bug tree-optimization/55124] [4.8 Regression] ICE in find_or_generate_expression, at tree-ssa-pre.c:2803
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55124 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|ASSIGNED|NEW AssignedTo|rguenth at gcc dot gnu.org |unassigned at gcc dot ||gnu.org --- Comment #4 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30 10:18:52 UTC --- Toms, not mine.
[Bug tree-optimization/55111] [4.8 Regression] ICE: tree check: expected ssa_name, have integer_cst in live_on_edge, at tree-vrp.c:89
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55111 --- Comment #3 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30 10:27:51 UTC --- We have an unfolded stmt: (gdb) call debug_gimple_stmt (def_stmt) pretmp_36 = (long int) 18446744073709551615; I have a patch.
[Bug c++/55135] Segfault of gcc on a big file
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55135 --- Comment #1 from benoit.barbot at gmail dot com 2012-10-30 10:28:22 UTC --- The file is too big to be attached. Here is a URL where you can find it: http://www.lsv.ens-cachan.fr/~barbot/cosmos/files/buggcc.ii
[Bug rtl-optimization/55122] [4.8 Regression] ICE: maximum number of LRA constraint passes is achieved (15)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55122 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2012-10-30 CC||hjl.tools at gmail dot com Ever Confirmed|0 |1 --- Comment #2 from H.J. Lu hjl.tools at gmail dot com 2012-10-30 10:36:29 UTC --- Confirmed.
[Bug c++/55135] Segfault of gcc on a big file
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55135 Marek Polacek mpolacek at gcc dot gnu.org changed: What|Removed |Added CC||mpolacek at gcc dot gnu.org --- Comment #2 from Marek Polacek mpolacek at gcc dot gnu.org 2012-10-30 10:39:43 UTC --- Please try newer version of GCC.
[Bug libfortran/54012] printf crash with -lgfortran
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54012 --- Comment #5 from Marek Polacek mpolacek at gcc dot gnu.org 2012-10-30 10:47:13 UTC --- (In reply to comment #4) Have you compiled with -lgfortran? Yeah.
[Bug c++/55136] New: template class member template explicit instanciation fails if non template overload exists
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55136
Bug #: 55136
Summary: template class member template explicit instanciation
fails if non template overload exists
Classification: Unclassified
Product: gcc
Version: 4.7.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: frrr...@gmail.com
this code:
template typename T1
struct A {
void f(int) {}
templatetypename T2 void f(T2) {}
};
template void Aint::fint(int);
fails with:
test2.cpp:6:15: error: ambiguous template specialization ‘fint’ for ‘void
Aint::f(int)’
test2.cpp:3:10: error: candidates are: void AT1::f(int) [with T1 = int]
test2.cpp:4:32: error: templateclass T2 void A::f(T2) [with
T2 = T2; T1 = int]
The instanciation should not be ambiguous as the 'int' should exclude the non
template f.
Note that:
template typename T1
struct A {
void f(int) {}
templatetypename T2 void f(T2) {}
};
template void Aint::f(int);
fails as well, but I am not sufficiently standard savy to tell if this is
compliant behaviour.
[Bug debug/54402] [4.8 Regression] var-tracking does not scale
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402 --- Comment #10 from Markus Trippelsdorf markus at trippelsdorf dot de 2012-10-30 10:58:48 UTC --- With Jakub's patch the testcase mentioned in comment 2: http://llvm.org/bugs/attachment.cgi?id=9362action=edit now takes 2:30 minutes to compile (up from 1:40).
[Bug lto/55118] Missed forward propagation of addresses
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55118 --- Comment #2 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30 11:11:35 UTC --- We can't really do much here without breaking type-based alias analysis and data dependence analysis (which depends on seeing only array-refs when they were present in the original source). Which means that it is eventually worth considering to lower the address forms some more (even the rare case we combine them with dereferences in forwprop is suspicious). Thus, lower bb 3: # i_66 = PHI i_16(3), 0(2) _12 = MEM[(const struct Domain *)_10 + 32B].D.119657.domain_m[i_66].D.114927; _13 = MEM[(struct Domain *)this_1(D) + 8B].D.119657.domain_m[i_66].D.114927; _14 = MEM[(const Element_t[2] )_12]; MEM[(Element_t[2] )_13][0] = _14; _15 = MEM[(const Element_t[2] )_12 + 4]; MEM[(Element_t[2] )_13][1] = _15; i_16 = i_66 + 1; if (i_16 != 3) goto bb 3; to sth like tem = i_66 * 4; tem = tem + 32; _12 = _10 + tem; nothing for 4.8 though. And it will badly interact with __builtin_object_size again.
[Bug debug/54402] [4.8 Regression] var-tracking does not scale
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402 --- Comment #11 from Markus Trippelsdorf markus at trippelsdorf dot de 2012-10-30 11:24:41 UTC --- (In reply to comment #10) With Jakub's patch the testcase mentioned in comment 2: http://llvm.org/bugs/attachment.cgi?id=9362action=edit now takes 2:30 minutes to compile (up from 1:40). Sorry, I meant to write Even with Jakub's patch, because it has no effect on the compile time of this testcase.
[Bug fortran/55134] associate construct and assumed size array
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55134
Tobias Burnus burnus at gcc dot gnu.org changed:
What|Removed |Added
Keywords||wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed||2012-10-30
CC||burnus at gcc dot gnu.org,
||janus at gcc dot gnu.org
Ever Confirmed|0 |1
--- Comment #1 from Tobias Burnus burnus at gcc dot gnu.org 2012-10-30
11:34:37 UTC ---
From the dump. gfortran first generates a deferred-shape array:
a.data = (void * restrict) i[0];
That's fine. But instead of passing
foo (a);
it should pass
foo (a.data);
In resolve.c's resolve_assoc_var, one properly sets sym-as-type =
AS_DEFERRED.
The problem is that the code assumes that if the variable is not a pointer, it
cannot be AS_DEFERRED. From trans-array.c's
gfc_conv_array_parameter:
7017 if (!sym-attr.pointer
7018 sym-as
7019 sym-as-type != AS_ASSUMED_SHAPE
7020 sym-as-type != AS_ASSUMED_RANK
7021 !sym-attr.allocatable)
7022{
...
[Bug libfortran/30162] [4.7/4.8 Regression] I/O with named pipes does not work
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30162 Tobias Burnus burnus at gcc dot gnu.org changed: What|Removed |Added CC||burnus at gcc dot gnu.org Target Milestone|--- |4.7.3 Summary|I/O with named pipes does |[4.7/4.8 Regression] I/O |not work|with named pipes does not ||work --- Comment #25 from Tobias Burnus burnus at gcc dot gnu.org 2012-10-30 11:37:18 UTC --- As Janne just mentioned on the gfortran mailing list, this PR is a regression. Thus, I have marked it as such. Based on the information below, It fails since GCC 4.7. In reply to comment #22) Revision 180701 removed all checks for special files in unit.c:unit_truncate().
[Bug c++/55109] internal compiler error: Segmentation fault while reporting error in template function instantiation
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55109 --- Comment #3 from Daniel Mulcahy ZetaetaDaniel at gmail dot com 2012-10-30 11:41:43 UTC --- New, improved backtrace: #0 0x004e00d7 in tsubst_copy (t=optimized out, args=0x75602578, complain=3, in_decl=optimized out) at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:12149 #1 0x004e0454 in tsubst_copy_and_build (t=t@entry=0x754a5bb0, args=args@entry=0x75602578, complain=complain@entry=3, in_decl=in_decl@entry=0x755ffda8, function_p=function_p@entry=0 '\000', integral_constant_expression_p=integral_constant_expression_p@entry=0 '\000') at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:14337 #2 0x004dbfea in tsubst_expr (t=t@entry=0x754a5bb0, args=args@entry=0x75602578, complain=complain@entry=3, in_decl=in_decl@entry=0x755ffda8, integral_constant_expression_p=integral_constant_expression_p@entry=0 '\000') at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:13387 #3 0x004e7dcf in tsubst_pack_expansion (t=0x756022d8, args=args@entry=0x75602578, complain=complain@entry=3, in_decl=in_decl@entry=0x755ffda8) at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:9523 #4 0x004e104b in tsubst_copy_and_build (t=t@entry=0x755d5d00, args=args@entry=0x75602578, complain=complain@entry=3, in_decl=in_decl@entry=0x755ffda8, function_p=function_p@entry=0 '\000', integral_constant_expression_p=integral_constant_expression_p@entry=0 '\000') at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:13894 #5 0x004dbfea in tsubst_expr (t=0x755d5d00, args=args@entry=0x75602578, complain=complain@entry=3, in_decl=0x755ffda8, integral_constant_expression_p=integral_constant_expression_p@entry=0 '\000') at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:13387 #6 0x004e28b0 in tsubst (in_decl=optimized out, complain=optimized out, args=optimized out, t=0x756095e8) at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:11839 #7 tsubst (t=optimized out, args=0x75602578, complain=3, in_decl=optimized out) at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:11170 #8 0x004e880c in tsubst_function_type (t=t@entry=0x756099d8, args=args@entry=0x75602578, complain=complain@entry=3, in_decl=0x755ffda8) at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:10992 #9 0x004e2cdb in tsubst (in_decl=optimized out, complain=optimized out, args=optimized out, t=0x756099d8) at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:11667 #10 tsubst (t=optimized out, args=0x75602578, complain=3, in_decl=optimized out) at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:11170 #11 0x004e5b03 in tsubst_template_args (t=0x75604f28, args=args@entry=0x75602578, complain=complain@entry=3, in_decl=in_decl@entry=0x755ffda8) at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:9731 #12 0x004df412 in tsubst_aggr_type (t=0x75609a80, args=0x75602578, complain=3, in_decl=0x755ffda8, entering_scope=0) at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:9927 #13 0x004e2eb9 in tsubst (in_decl=optimized out, complain=optimized out, args=optimized out, t=0x75609a80) at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:11261 #14 tsubst (t=optimized out, args=0x75602578, complain=3, in_decl=optimized out) at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:11170 #15 0x004e0d9c in tsubst_copy_and_build (t=0x7560e780, args=args@entry=0x75602578, complain=complain@entry=3, in_decl=in_decl@entry=0x755ffda8, function_p=function_p@entry=0 '\000', integral_constant_expression_p=integral_constant_expression_p@entry=0 '\000') at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:13557 #16 0x004e0fee in tsubst_copy_and_build (t=t@entry=0x7549ff30, args=args@entry=0x75602578, complain=complain@entry=3, in_decl=in_decl@entry=0x755ffda8, function_p=function_p@entry=0 '\000', integral_constant_expression_p=integral_constant_expression_p@entry=0 '\000') at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:13888 #17 0x004dbfea in tsubst_expr (t=0x7549ff30, args=args@entry=0x75602578, complain=complain@entry=3, in_decl=in_decl@entry=0x755ffda8, integral_constant_expression_p=integral_constant_expression_p@entry=0 '\000') at /home/daniel/Documents/packages/ABS/gcc/src/gcc-4.7.2/gcc/cp/pt.c:13387 #18 0x004dc55a in tsubst_expr (t=0x7560e898, args=args@entry=0x75602578, complain=complain@entry=3,
[Bug c++/55135] Segfault of gcc on a big file
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55135 Paolo Carlini paolo.carlini at oracle dot com changed: What|Removed |Added Status|UNCONFIRMED |WAITING Last reconfirmed||2012-10-30 CC|benoit.barbot at gmail dot | |com | Ever Confirmed|0 |1 --- Comment #3 from Paolo Carlini paolo.carlini at oracle dot com 2012-10-30 11:48:23 UTC --- And if you can still reproduce, please attach here a preprocessed file of manageable size. Thanks.
[Bug c++/55109] internal compiler error: Segmentation fault while reporting error in template function instantiation
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55109 --- Comment #4 from Paolo Carlini paolo.carlini at oracle dot com 2012-10-30 11:53:22 UTC --- Created attachment 28572 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28572 Testcase
[Bug c++/55109] internal compiler error: Segmentation fault while reporting error in template function instantiation
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55109 Paolo Carlini paolo.carlini at oracle dot com changed: What|Removed |Added Status|WAITING |NEW --- Comment #5 from Paolo Carlini paolo.carlini at oracle dot com 2012-10-30 11:56:33 UTC --- Thanks. In general, we don't work with URLs, simply attach the testcase as-is.
[Bug tree-optimization/55111] [4.8 Regression] ICE: tree check: expected ssa_name, have integer_cst in live_on_edge, at tree-vrp.c:89
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55111 --- Comment #4 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30 12:02:45 UTC --- Author: rguenth Date: Tue Oct 30 12:02:39 2012 New Revision: 192984 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=192984 Log: 2012-10-30 Richard Biener rguent...@suse.de PR tree-optimization/55111 * tree-ssa-pre.c (eliminate_insert): Properly fold the built stmt. * gcc.dg/torture/pr55111.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr55111.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-pre.c
[Bug tree-optimization/55111] [4.8 Regression] ICE: tree check: expected ssa_name, have integer_cst in live_on_edge, at tree-vrp.c:89
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55111 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED --- Comment #5 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30 12:03:12 UTC --- Fixed.
[Bug c++/55137] New: [4.8 Regression] Unexpected static structure initialization
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55137
Bug #: 55137
Summary: [4.8 Regression] Unexpected static structure
initialization
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: sebastian.hu...@embedded-brains.de
Created attachment 28573
-- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28573
Test case.
The test case:
struct S {
int a;
int b;
};
struct S s = {
sizeof(int),
(((1024 * 8) * 2) - (1024 * 8))
+ ((int)(((1024 * 8)) + (2 * sizeof(int)) + 8 - 1))
};
yields:
gcc -xc++ -g -c test.cc -o test.o gdb test.o -ex p s -ex quit
[...]
$1 = {a = 0, b = 0}
Correct is (sizeof(int) == 4):
gcc -xc -g -c test.cc -o test.o gdb test.o -ex p s -ex quit
[...]
$1 = {a = 4, b = 16399}
[Bug c++/55136] template class member template explicit instantiation fails if non template overload exists
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55136 Jonathan Wakely redi at gcc dot gnu.org changed: What|Removed |Added Keywords||rejects-valid Status|UNCONFIRMED |NEW Last reconfirmed||2012-10-30 Ever Confirmed|0 |1
[Bug debug/54402] [4.8 Regression] var-tracking does not scale
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402 --- Comment #12 from Markus Trippelsdorf markus at trippelsdorf dot de 2012-10-30 12:25:33 UTC --- (In reply to comment #10) http://llvm.org/bugs/attachment.cgi?id=9362action=edit now takes 2:30 minutes to compile (up from 1:40). This regression is caused by: http://gcc.gnu.org/viewcvs?view=revisionrevision=192961
[Bug gcov-profile/55121] ICE in if-convertion with PGO (ARM)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55121 --- Comment #11 from christophe.lyon at st dot com 2012-10-30 12:53:23 UTC --- Created attachment 28574 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28574 configargs.h
[Bug gcov-profile/55121] ICE in if-convertion with PGO (ARM)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55121 --- Comment #12 from christophe.lyon at st dot com 2012-10-30 12:55:09 UTC --- (In reply to comment #7) (In reply to comment #0) eval.c: In function 'Ge': eval.c:792:1: internal compiler error: in df_compact_blocks, at df-core.c:1570 0x6917c1 df_compact_blocks() This is not at r191819 or you're not sharing all your patches. Line df-core.c:1570 at r191819 is a comment. It is the revision suggested by my git clone; I believe it's OK, as hadn't removed a couple debugging printf calls.
[Bug c++/55137] [4.8 Regression] Unexpected static structure initialization
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55137
Paolo Carlini paolo.carlini at oracle dot com changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed||2012-10-30
Ever Confirmed|0 |1
--- Comment #1 from Paolo Carlini paolo.carlini at oracle dot com 2012-10-30
12:56:07 UTC ---
Insane.
struct S {
int b;
};
struct S s = { -1 + (int)(sizeof(int) - 1) };
[Bug gcov-profile/55121] ICE in if-convertion with PGO (ARM)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55121 --- Comment #13 from christophe.lyon at st dot com 2012-10-30 12:57:21 UTC --- (In reply to comment #10) (In reply to comment #8) I cannot reproduce the problem with a cross-compiler from powerpc64-unknown-linux-gnu to arm-eabi at r191819 with the patches and flags from comment #0. Ah, needs -freorder-blocks-and-partition too, of course. Yes sorry, I guess I had a cut paste issue when I copied the options.
[Bug c++/55137] [4.8 Regression] Unexpected static structure initialization
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55137 Paolo Carlini paolo.carlini at oracle dot com changed: What|Removed |Added Priority|P3 |P2
[Bug tree-optimization/55138] New: [4.7 Regression] inlining fails with -O2 on gcc 4.7.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55138 Bug #: 55138 Summary: [4.7 Regression] inlining fails with -O2 on gcc 4.7.2 Classification: Unclassified Product: gcc Version: 4.7.2 Status: UNCONFIRMED Severity: major Priority: P3 Component: tree-optimization AssignedTo: unassig...@gcc.gnu.org ReportedBy: konstantin.vladimi...@gmail.com Created attachment 28575 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28575 reproduction found on private target, but can be easily reproduced on x86, so I think every target is affected. Compile attached file on gcc-4.7.2 with -O2 -DBROKEN to make function inlined. Next run. You will see error. Compile just with -O2, next run and you will see no error. This error can not be reproduced on gcc-4.6.3, everything works fine. Problems starts with 4.7
[Bug gcov-profile/55121] ICE in if-convertion with PGO (ARM)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55121 --- Comment #14 from christophe.lyon at st dot com 2012-10-30 13:18:15 UTC --- Created attachment 28576 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28576 eval.c.041i.profile
[Bug libfortran/54012] printf crash with -lgfortran
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54012 --- Comment #6 from Steve Kargl sgk at troutmask dot apl.washington.edu 2012-10-30 13:20:46 UTC --- On Tue, Oct 30, 2012 at 09:52:04AM +, astroseger at gmail dot com wrote: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54012 --- Comment #3 from Sergey Rodionov astroseger at gmail dot com 2012-10-30 09:52:04 UTC --- What does gdb tell you? gdb tells: Program received signal SIGSEGV, Segmentation fault. 0x7779f8f2 in __parse_one_specmb () from /lib64/libc.so.6 Not very helpful. What does gdb tell you when you compiler with the -g option and issue bt at the gdb prompt?
[Bug gcov-profile/55121] ICE in if-convertion with PGO (ARM)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55121 --- Comment #15 from christophe.lyon at st dot com 2012-10-30 13:23:19 UTC --- (In reply to comment #9) Can you please also attach the output of -fdump-ipa-profile-all which should be eval.c.041i.profile. I have my dump here, it should be the same as yours. Done. Are you working on a 32-bit host? The counts are quite high, there are some places where the count is multiplied by REG_BR_PROB_BASE which is 1. The highest count in my .profile dump is 42974935, if such high counts are multiplied somewhere for scaling then this may be an overflow issue that I can't see on powerpc64. No, I am working on an x86_64 machine, and I expect configure to have auto detected it (I didn't force --host)
[Bug c++/55135] Segfault of gcc on a big file
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55135 --- Comment #4 from benoit.barbot at gmail dot com 2012-10-30 13:29:04 UTC --- When i remove line in the file the segfault disappear. The size of the file seams to trigger the segfault.
[Bug libfortran/54012] printf crash with -lgfortran
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54012 --- Comment #7 from Sergey Rodionov astroseger at gmail dot com 2012-10-30 14:03:27 UTC --- (In reply to comment #6) On Tue, Oct 30, 2012 at 09:52:04AM +, astroseger at gmail dot com wrote: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54012 --- Comment #3 from Sergey Rodionov astroseger at gmail dot com 2012-10-30 09:52:04 UTC --- What does gdb tell you? gdb tells: Program received signal SIGSEGV, Segmentation fault. 0x7779f8f2 in __parse_one_specmb () from /lib64/libc.so.6 Not very helpful. What does gdb tell you when you compiler with the -g option and issue bt at the gdb prompt? (gdb) run Starting program: /home/seger/TEMP/10/a.out Program received signal SIGSEGV, Segmentation fault. 0x7779f8f2 in __parse_one_specmb () from /lib64/libc.so.6 (gdb) bt #0 0x7779f8f2 in __parse_one_specmb () from /lib64/libc.so.6 #1 0x77781230 in vfprintf () from /lib64/libc.so.6 #2 0x7778b179 in printf () from /lib64/libc.so.6 #3 0x0040051a in main () at 1.c:4
[Bug c++/55135] Segfault of gcc on a big file
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55135 Markus Trippelsdorf markus at trippelsdorf dot de changed: What|Removed |Added CC||markus at trippelsdorf dot ||de --- Comment #5 from Markus Trippelsdorf markus at trippelsdorf dot de 2012-10-30 14:03:47 UTC --- I can't reproduce the crash, but what's interesting are the compile times (without optimization just -c buggcc.ii): clang++: 26.95 total gcc-4.6.3: 1:39.92 total gcc-4.7.2: 6:04.07 total gcc-4.8 : 7:16.84 total
[Bug target/55108] bad compile-time evaluation of members of initialized union
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55108 Richard Earnshaw rearnsha at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2012-10-30 Ever Confirmed|0 |1 Known to fail||4.6.3, 4.7.0 --- Comment #2 from Richard Earnshaw rearnsha at gcc dot gnu.org 2012-10-30 14:13:15 UTC --- Confirmed. It seems the compiler is incorrectly eliminating some zero-extend operations. We have Ra:SI = Rx:SI 8 Rb:QI = subreg:QI (Ra:SI 0) Rc:SI = subreg:SI (Rb:QI 0) Rd:SI = Rc:SI 255 cse1 pass then decides incorrectly (and presumably because of the paradoxical subreg) that Rd == Rc and discards the mask operation. Also seen in 4.7, haven't been able to test trunk.
[Bug target/55108] bad compile-time evaluation of members of initialized union
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55108 --- Comment #3 from Richard Earnshaw rearnsha at gcc dot gnu.org 2012-10-30 14:15:43 UTC --- At armv6t2 and later we have a ubfx instruction available and that is enough to mask this bug.
[Bug c++/54883] Name mangling of types in an unnamed namespace
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54883
--- Comment #2 from Sebastian Huber sebastian.hu...@embedded-brains.de
2012-10-30 14:16:05 UTC ---
Known to work GCC 4.0.4, 4.1.2, and 4.2.4:
echo namespace { enum E { E1 }; } void f(E e) { } | tee a.c b.c
namespace { enum E { E1 }; } void f(E e) { }
/scratch/install-gcc-4.2.4/bin/g++ -c a.c -o a.o
/scratch/install-gcc-4.2.4/bin/g++ -c b.c -o b.o
nm a.o b.o
a.o:
T _Z1fN32_GLOBAL__N_a.c__287815161EE
U __gxx_personality_v0
b.o:
T _Z1fN32_GLOBAL__N_b.c__BE213B141EE
U __gxx_personality_v0
Known to fail 4.3.6, 4.4.7, 4.5.4, 4.6.3, 4.7.2, and 4.8.0.
Is this a bug or a feature?
In the GCC 4.3 release notes there is nothing about namespaces
(http://gcc.gnu.org/gcc-4.3/changes.html).
It would be nice if someone can point out the future direction of this PR, e.g.
NEW or RESOLVED/WONTFIX.
[Bug tree-optimization/55138] [4.7 Regression] inlining fails with -O2 on gcc 4.7.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55138 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Keywords||wrong-code Status|UNCONFIRMED |NEW Last reconfirmed||2012-10-30 Known to work||4.6.3, 4.8.0 Target Milestone|--- |4.7.3 Ever Confirmed|0 |1 Known to fail||4.7.2 --- Comment #1 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30 14:27:04 UTC --- Confirmed. Seems to be fixed on trunk.
[Bug middle-end/55132] [4.8 Regression] FAIL: g++.dg/tree-ssa/pr45453.C
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55132 Hans-Peter Nilsson hp at gcc dot gnu.org changed: What|Removed |Added CC||hp at gcc dot gnu.org --- Comment #2 from Hans-Peter Nilsson hp at gcc dot gnu.org 2012-10-30 14:40:17 UTC --- Are you sure it was r192964 for your target (wild guess x86_64-linux)? For cris-elf, I see this regression introduced in the (] range 192943:192956.
[Bug tree-optimization/55138] [4.7 Regression] inlining fails with -O2 on gcc 4.7.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55138 --- Comment #2 from Mikael Pettersson mikpe at it dot uu.se 2012-10-30 14:47:41 UTC --- Created attachment 28577 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28577 reduced test case in C C++ not needed, fails also in C, works with gcc-4.6.3
[Bug middle-end/55132] [4.8 Regression] FAIL: g++.dg/tree-ssa/pr45453.C
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55132 --- Comment #3 from Uros Bizjak ubizjak at gmail dot com 2012-10-30 15:06:23 UTC --- (In reply to comment #2) Are you sure it was r192964 for your target (wild guess x86_64-linux)? For cris-elf, I see this regression introduced in the (] range 192943:192956. Oh, it is r192946. At least the link was correct.
[Bug libstdc++/55028] _GLIBCXX_DEBUG is broken when using v7 namespace
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55028 --- Comment #4 from oleg at smolsky dot net 2012-10-30 15:09:49 UTC --- Created attachment 28578 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28578 exports Here is a patch that addresses the issue. IE my tests and apps link now.
[Bug tree-optimization/55138] [4.7 Regression] inlining fails with -O2 on gcc 4.7.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55138 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added CC||law at gcc dot gnu.org --- Comment #3 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30 15:11:28 UTC --- Looks like a dup of PR54985 to me.
[Bug tree-optimization/54985] [4.7 Regression] dom optimization erroneous remove conditional goto.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54985 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Summary|[4.7/4.8 Regression] dom|[4.7 Regression] dom |optimization erroneous |optimization erroneous |remove conditional goto.|remove conditional goto. --- Comment #12 from Richard Biener rguenth at gcc dot gnu.org 2012-10-30 15:12:59 UTC --- Fixed on trunk sofar.
[Bug tree-optimization/55124] [4.8 Regression] ICE in find_or_generate_expression, at tree-ssa-pre.c:2803
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55124 vries at gcc dot gnu.org changed: What|Removed |Added Status|NEW |ASSIGNED AssignedTo|unassigned at gcc dot |vries at gcc dot gnu.org |gnu.org |
[Bug middle-end/53708] [4.8 Regression] Many failures of the objc tests with -O3 -fnext-runtime and -m32
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53708
Peter Bergner bergner at gcc dot gnu.org changed:
What|Removed |Added
Status|RESOLVED|REOPENED
CC||bergner at gcc dot gnu.org
Resolution|FIXED |
--- Comment #9 from Peter Bergner bergner at gcc dot gnu.org 2012-10-30
15:47:57 UTC ---
Richard, I'm seeing this same bug in GCC 4.7 on powerpc64-linux when compiling
GLIBC. Is there a chance we can get your patch backported to 4.7? I
bootstrapped and regtested the backport with no regressions and can confirm it
fixes the bug I'm running into, which can be seen with the reduced test case
from glibc:
bergner@bns:~/gcc/BUGS cat foo.i
static void (*const init_array []) (void)
__attribute__ ((section (.init_array), aligned (sizeof (void *)), used))
= { 0 };
bergner@bns:~/gcc/BUGS /home/bergner/gcc/build/gcc-fsf-4_7-base/gcc/xgcc
-B/home/bergner/gcc/build/gcc-fsf-4_7-base/gcc -S -m64 -O3 -maltivec foo.i -o
bad.s
bergner@bns:~/gcc/BUGS /home/bergner/gcc/build/gcc-fsf-4_7-pr53708/gcc/xgcc
-B/home/bergner/gcc/build/gcc-fsf-4_7-pr53708/gcc -S -m64 -O3 -maltivec foo.i
-o good.s
bergner@bns:~/gcc/BUGS diff -u bad.s good.s
--- bad.s2012-10-30 10:41:15.0 -0500
+++ good.s2012-10-30 10:41:23.0 -0500
@@ -2,7 +2,7 @@
.section.toc,aw
.section.text
.section.init_array,a
-.align 4
+.align 3
.typeinit_array, @object
.sizeinit_array, 8
init_array:
The above is bad, because the extra alignment causes the linker to add some
null padding to the init_array and the loader isn't expecting that and ends up
segv'ing.
[Bug tree-optimization/55124] [4.8 Regression] ICE in find_or_generate_expression, at tree-ssa-pre.c:2803
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55124
vries at gcc dot gnu.org changed:
What|Removed |Added
CC||rguenth at gcc dot gnu.org
--- Comment #5 from vries at gcc dot gnu.org 2012-10-30 15:49:42 UTC ---
tentative patch:
...
Index: gcc/tree-ssa-pre.c
===
--- gcc/tree-ssa-pre.c(revision 192023)
+++ gcc/tree-ssa-pre.c(working copy)
@@ -1657,6 +1657,16 @@ phi_translate_1 (pre_expr expr, bitmap_set_t set1,
if (result)
VEC_free (vn_reference_op_s, heap, newoperands);
+if (result TREE_CODE (result) == SSA_NAME)
+ {
+gimple def_stmt = SSA_NAME_DEF_STMT (result);
+basic_block def_bb = gimple_bb (def_stmt);
+if (def_bb != pred
+ !dominated_by_p (CDI_DOMINATORS, pred,
+def_bb))
+ return NULL;
+ }
+
/* We can always insert constants, so if we have a partial
redundant constant load of another type try to translate it
to a constant of appropriate type. */
...
[Bug target/55139] New: __atomic store does not support __ATOMIC_HLE_RELEASE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55139
Bug #: 55139
Summary: __atomic store does not support __ATOMIC_HLE_RELEASE
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: andi-...@firstfloor.org
volatile int slock;
void unlock(void)
{
int free_val = 1;
__atomic_store(slock, free_val,
__ATOMIC_RELEASE|__ATOMIC_HLE_RELEASE);
}
spin.c: In function 'unlock':
spin.c:6:16: warning: invalid memory model argument 3 of '__atomic_store'
[-Winvalid-memory-model]
__atomic_store(slock, free_val, __ATOMIC_RELEASE|__ATOMIC_HLE_RELEASE);
But XRELEASE MOV ... is allowed in TSX.
[Bug middle-end/53708] [4.8 Regression] Many failures of the objc tests with -O3 -fnext-runtime and -m32
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53708
--- Comment #10 from rguenther at suse dot de rguenther at suse dot de
2012-10-30 17:10:52 UTC ---
On Tue, 30 Oct 2012, bergner at gcc dot gnu.org wrote:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53708
Peter Bergner bergner at gcc dot gnu.org changed:
What|Removed |Added
Status|RESOLVED|REOPENED
CC||bergner at gcc dot gnu.org
Resolution|FIXED |
--- Comment #9 from Peter Bergner bergner at gcc dot gnu.org 2012-10-30
15:47:57 UTC ---
Richard, I'm seeing this same bug in GCC 4.7 on powerpc64-linux when compiling
GLIBC. Is there a chance we can get your patch backported to 4.7? I
bootstrapped and regtested the backport with no regressions and can confirm it
fixes the bug I'm running into, which can be seen with the reduced test case
from glibc:
bergner@bns:~/gcc/BUGS cat foo.i
static void (*const init_array []) (void)
__attribute__ ((section (.init_array), aligned (sizeof (void *)), used))
= { 0 };
bergner@bns:~/gcc/BUGS /home/bergner/gcc/build/gcc-fsf-4_7-base/gcc/xgcc
-B/home/bergner/gcc/build/gcc-fsf-4_7-base/gcc -S -m64 -O3 -maltivec foo.i -o
bad.s
bergner@bns:~/gcc/BUGS /home/bergner/gcc/build/gcc-fsf-4_7-pr53708/gcc/xgcc
-B/home/bergner/gcc/build/gcc-fsf-4_7-pr53708/gcc -S -m64 -O3 -maltivec foo.i
-o good.s
bergner@bns:~/gcc/BUGS diff -u bad.s good.s
--- bad.s2012-10-30 10:41:15.0 -0500
+++ good.s2012-10-30 10:41:23.0 -0500
@@ -2,7 +2,7 @@
.section.toc,aw
.section.text
.section.init_array,a
-.align 4
+.align 3
.typeinit_array, @object
.sizeinit_array, 8
init_array:
The above is bad, because the extra alignment causes the linker to add some
null padding to the init_array and the loader isn't expecting that and ends up
segv'ing.
Certainly - but can you check there wasn't a followup for fallout?
ISTR something here ...
[Bug tree-optimization/55124] [4.8 Regression] ICE in find_or_generate_expression, at tree-ssa-pre.c:2803
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55124
--- Comment #6 from rguenther at suse dot de rguenther at suse dot de
2012-10-30 17:12:46 UTC ---
On Tue, 30 Oct 2012, vries at gcc dot gnu.org wrote:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55124
vries at gcc dot gnu.org changed:
What|Removed |Added
CC||rguenth at gcc dot gnu.org
--- Comment #5 from vries at gcc dot gnu.org 2012-10-30 15:49:42 UTC ---
tentative patch:
...
Index: gcc/tree-ssa-pre.c
===
--- gcc/tree-ssa-pre.c(revision 192023)
+++ gcc/tree-ssa-pre.c(working copy)
@@ -1657,6 +1657,16 @@ phi_translate_1 (pre_expr expr, bitmap_set_t set1,
if (result)
VEC_free (vn_reference_op_s, heap, newoperands);
+if (result TREE_CODE (result) == SSA_NAME)
+ {
+gimple def_stmt = SSA_NAME_DEF_STMT (result);
+basic_block def_bb = gimple_bb (def_stmt);
+if (def_bb != pred
+ !dominated_by_p (CDI_DOMINATORS, pred,
+def_bb))
+ return NULL;
+ }
+
/* We can always insert constants, so if we have a partial
redundant constant load of another type try to translate it
to a constant of appropriate type. */
...
Err ... certainly not. result is a value-number, not sth to
be taken literally and its def stmt to be looked up. See
how clean () removes names from the sets instead.
[Bug libfortran/54012] printf crash with -lgfortran
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54012 --- Comment #8 from Steve Kargl sgk at troutmask dot apl.washington.edu 2012-10-30 17:57:51 UTC --- What does gdb tell you? gdb tells: Program received signal SIGSEGV, Segmentation fault. 0x7779f8f2 in __parse_one_specmb () from /lib64/libc.so.6 Not very helpful. What does gdb tell you when you compiler with the -g option and issue bt at the gdb prompt? (gdb) run Starting program: /home/seger/TEMP/10/a.out Program received signal SIGSEGV, Segmentation fault. 0x7779f8f2 in __parse_one_specmb () from /lib64/libc.so.6 (gdb) bt #0 0x7779f8f2 in __parse_one_specmb () from /lib64/libc.so.6 #1 0x77781230 in vfprintf () from /lib64/libc.so.6 #2 0x7778b179 in printf () from /lib64/libc.so.6 #3 0x0040051a in main () at 1.c:4 This does not look like a libgfortran issue. Do you have valgrind on your system? Can you run the good and bad executable under valgrind? This appears to be a buffer issue in your libc.
[Bug debug/54402] [4.8 Regression] var-tracking does not scale
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402 --- Comment #13 from Jakub Jelinek jakub at gcc dot gnu.org 2012-10-30 18:24:17 UTC --- IMHO it is really not useful to dup together completely unrelated var-tracking PRs together. test-tgmath.i clearly has nothing to do with frame_pointer_needed frame replacements, or with clobber_overlapping_mems speed. The problem there is that we have just a huge amount of VALUEs that are being tracked, e.g. because of the huge result |= this; result |= that; result |= someothertest;. The reason why Alex' recent patch slows it so much down is I believe because it doesn't check whether there aren't already debug stmts for the decls in question, if there are at the beginning of the bb, it shouldn't try to add them again. Otherwise we end up with, as shown on test-tgmath2.i.*.optimized: # DEBUG result = result_3855 # DEBUG result = result_3855 # DEBUG result = result_3855 # DEBUG result = result_3855 # DEBUG result = result_3855 # DEBUG result = result_3855 # DEBUG result = result_3855 # DEBUG result = result_3855 or # DEBUG result = result_3786 # DEBUG ptype = texpr # DEBUG result = result_3786 # DEBUG ptype = texpr # DEBUG result = result_3786 # DEBUG ptype = texpr # DEBUG result = result_3786 # DEBUG ptype = texpr on pretty big number from the total of 9000 basic blocks in the testcase. So, perhaps the copying of debug stmts should start with checking if the destination after labels contains any debug stmts, and if yes, gather their decls into some pointer set/bitmap etc., then copy only those which don't have debug stmts there yet (and set the pointer set/bitmap immediately too, so that we don't copy over more than one debug stmt for each lhs decl).
[Bug middle-end/53708] [4.8 Regression] Many failures of the objc tests with -O3 -fnext-runtime and -m32
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53708 --- Comment #11 from Peter Bergner bergner at gcc dot gnu.org 2012-10-30 18:27:36 UTC --- Do you mean Richard Sandiford's comment regarding your patch and then your reply? http://gcc.gnu.org/ml/gcc-patches/2012-06/msg01229.html Hmmm, if attribute((__aligned__)) really only sets the minimum alignment value and we're free to increase it arbitrarily, then maybe it's GLIBC's fault for not being able to handle null values due to padding while processing the init_array?
[Bug middle-end/53708] [4.8 Regression] Many failures of the objc tests with -O3 -fnext-runtime and -m32
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53708 Jakub Jelinek jakub at gcc dot gnu.org changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment #12 from Jakub Jelinek jakub at gcc dot gnu.org 2012-10-30 18:38:14 UTC --- I'm not sure if DECL_USER_ALIGN || DECL_P is the right test for this, I'd say instead if (DECL_SECTION_NAME (decl) != NULL_TREE !DECL_HAS_IMPLICIT_SECTION_NAME_P (decl)) is what is the problem here, this is what I'm using in asan.c to find out whether it is ok to increase alignment and/or add padding after the decl. It is a common way of filling arrays to just put variables into user defined sections, and expect the whole section to contain an array of those decls. Any alignment increases there or additional paddings of course break that assumption.
[Bug middle-end/35305] Speculative PRE support missing
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35305
--- Comment #4 from davidxl xinliangli at gmail dot com 2012-10-30 18:57:18
UTC ---
The suggested transformation can be useful in some cases, but won't be general
enough. The listed example is an extreme case. For instance, the second a+b
instance does not have to be in the hot trace but still still hot enough to be
PREed. Or there is no one dominating traces available -- the expression is
available in all incoming paths except for one rare path.
switch (a)
{
case 1:
g[1] = a + b;
break;
case 2:
g[2] = a + b;
break;
case 3:
g[3] = a + b;
...
default:
g[0] = 0;
}
switch (b)
{
case 1:
... a + b; // partially redundant
case 2:
... a + b; // redundant
default:
// does nothing
break;
}
Regarding handling dereferences, the availability and down-safety analysis
needs to be extended to to recognize safe speculation candidates.
Example 1: dereference of same pointer fully available --
int g1, g2;
struct A
{
int a;
int b;
};
void foo(struct A* ap, int k,int m)
{
if (__builtin_expect (k, 1))
g1 = ap-b;
else
g2 = ap-a;
if (__builtin_expect (m, 1))
{
g2 = ap-b;// Good safe speculative PRE candidate
}
}
Example 2: deference of ap fully anticipated
int g1, g2;
struct A
{
int a;
int b;
};
void foo(struct A* ap, int k,int m)
{
if (__builtin_expect (k, 1))
g1 = ap-b;
if (__builtin_expect (m, 1))
g2 = ap-b; // Safe to speculatively hoist across the branch
into the else of the previous branch
else
g1 = ap-a;
}
David
(In reply to comment #3)
Wouldn't this be a candidate for forming a superblock from hot traces of
a function? Thus in the testcase
if (k m)
{
g1 = a + b;
g2 = a + b;
}
else
{
... old code
}
which would also handle the case where we cannot speculatively move code
(like dereferences)?
[Bug middle-end/54386] [4.8 Regression] Unaligned mem load wrongly generated for inlined inline/static function
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54386 Mikael Pettersson mikpe at it dot uu.se changed: What|Removed |Added CC||jamborm at gcc dot gnu.org --- Comment #7 from Mikael Pettersson mikpe at it dot uu.se 2012-10-30 19:28:15 UTC --- I'm seeing the same code quality regression on sparc64-linux, another strict-alignment target. The regression started with r185470: http://gcc.gnu.org/ml/gcc-cvs/2012-03/msg00800.html http://gcc.gnu.org/ml/gcc-patches/2012-03/msg00989.html Patch author CC:d.
[Bug libfortran/54012] printf crash with -lgfortran
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54012 --- Comment #9 from Sergey Rodionov astroseger at gmail dot com 2012-10-30 19:35:15 UTC --- This does not look like a libgfortran issue. Do you have valgrind on your system? Can you run the good and bad executable under valgrind? This appears to be a buffer issue in your libc. 1. I have this bug on 3 different computers with installed magiea 2 x86_64 2. Yes, it is very strange. It not look like libgfortran issue, but if I compile without -l gfortran it works. 3. If I compile with -static it always works. 4. Just in case ldd good looks like: linux-vdso.so.1 = (0x7fffe4f54000) libc.so.6 = /lib64/libc.so.6 (0x7fc68961c000) /lib64/ld-linux-x86-64.so.2 (0x7fc6899a8000) ldd bad: linux-vdso.so.1 = (0x7fffd97ff000) libgfortran.so.3 = /usr/lib64/libgfortran.so.3 (0x7f74e86ad000) libc.so.6 = /lib64/libc.so.6 (0x7f74e8321000) libquadmath.so.0 = /usr/lib64/libquadmath.so.0 (0x7f74e80ec000) libm.so.6 = /lib64/libm.so.6 (0x7f74e7e6a000) /lib64/ld-linux-x86-64.so.2 (0x7f74e89c3000) so they use the same libc 5. valgrind with bad says: ==26497== Memcheck, a memory error detector ==26497== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al. ==26497== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info ==26497== Command: ./a.out ==26497== ==26497== Invalid read of size 1 ==26497==at 0x51A58F2: __parse_one_specmb (in /lib64/libc-2.14.1.so) ==26497==by 0x518722F: vfprintf (in /lib64/libc-2.14.1.so) ==26497==by 0x5191178: printf (in /lib64/libc-2.14.1.so) ==26497==by 0x400519: main (in /home/seger/TEMP/a.out) ==26497== Address 0x4023b3 is not stack'd, malloc'd or (recently) free'd ==26497== ==26497== ==26497== Process terminating with default action of signal 11 (SIGSEGV) ==26497== Access not within mapped region at address 0x4023B3 ==26497==at 0x51A58F2: __parse_one_specmb (in /lib64/libc-2.14.1.so) ==26497==by 0x518722F: vfprintf (in /lib64/libc-2.14.1.so) ==26497==by 0x5191178: printf (in /lib64/libc-2.14.1.so) ==26497==by 0x400519: main (in /home/seger/TEMP/a.out) ==26497== If you believe this happened as a result of a stack ==26497== overflow in your program's main thread (unlikely but ==26497== possible), you can try to increase the size of the ==26497== main thread stack using the --main-stacksize= flag. ==26497== The main thread stack size used in this run was 16777216. ==26497== ==26497== HEAP SUMMARY: ==26497== in use at exit: 3,769 bytes in 15 blocks ==26497== total heap usage: 19 allocs, 4 frees, 11,909 bytes allocated ==26497== ==26497== LEAK SUMMARY: ==26497==definitely lost: 0 bytes in 0 blocks ==26497==indirectly lost: 0 bytes in 0 blocks ==26497== possibly lost: 0 bytes in 0 blocks ==26497==still reachable: 3,769 bytes in 15 blocks ==26497== suppressed: 0 bytes in 0 blocks ==26497== Rerun with --leak-check=full to see details of leaked memory ==26497== ==26497== For counts of detected and suppressed errors, rerun with: -v ==26497== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 4 from 4) 6. valgrind with good says that all ok... quite strange :)
[Bug c++/55120] Inaccessible virtual base constructor does not prevent generation of default constructor
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55120 --- Comment #7 from Daniel Krügler daniel.kruegler at googlemail dot com 2012-10-30 19:48:21 UTC --- (In reply to comment #5) Curious that G++, Comeau and Clang all accept the example in CWG issue 7, despite the rationale (and Mike) indicating it's intended that a virtual private base can't be derived from. It has been explained to me that EDG's behaviour is a known bug.
[Bug middle-end/55116] [4.8 Regression] LRA failed to decompose ASHIFT
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55116 --- Comment #11 from hjl at gcc dot gnu.org hjl at gcc dot gnu.org 2012-10-30 21:35:42 UTC --- Author: hjl Date: Tue Oct 30 21:35:35 2012 New Revision: 192996 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=192996 Log: Add another testcase for PR middle-end/55116 * gcc.target/i386/pr55116-2.c: New file. Added: trunk/gcc/testsuite/gcc.target/i386/pr55116-2.c Modified: trunk/gcc/testsuite/ChangeLog
[Bug rtl-optimization/55141] New: [4.8 Regression] wrong code with -fno-split-wide-types
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55141 Bug #: 55141 Summary: [4.8 Regression] wrong code with -fno-split-wide-types Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: rtl-optimization AssignedTo: unassig...@gcc.gnu.org ReportedBy: zso...@seznam.cz Created attachment 28579 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28579 reduced testcase (from gcc.c-torture/execute/2808-1.c) Output: $ gcc -O -fno-split-wide-types testcase.c $ ./a.out Aborted Tested revisions: r192991 - fail r192654 - OK
[Bug tree-optimization/55138] [4.7 Regression] inlining fails with -O2 on gcc 4.7.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55138 Mikael Pettersson mikpe at it dot uu.se changed: What|Removed |Added CC||mikpe at it dot uu.se --- Comment #4 from Mikael Pettersson mikpe at it dot uu.se 2012-10-30 21:57:13 UTC --- Backporting the PR54985 fixes (r192745, r192746, r192754, and r192852) to 4.7 does fix this PR's reduced test case.
[Bug libfortran/54012] printf crash with -lgfortran
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54012 Tobias Burnus burnus at gcc dot gnu.org changed: What|Removed |Added CC||burnus at gcc dot gnu.org --- Comment #10 from Tobias Burnus burnus at gcc dot gnu.org 2012-10-30 22:04:33 UTC --- (In reply to comment #9) ldd bad: linux-vdso.so.1 = (0x7fffd97ff000) libquadmath.so.0 = /usr/lib64/libquadmath.so.0 (0x7f74e80ec000) Could you try linking libquadmath directly instead of libgfortran (which implies libquadmath)? The reason is that libquadmath installs, if possible, GLIBC's printf hooks, cf. http://gcc.gnu.org/onlinedocs/libquadmath/quadmath_005fsnprintf.html and the source code at http://gcc.gnu.org/viewcvs/trunk/libquadmath/printf/quadmath-printf.c?view=markup With those hooks, printf(%Qe\n, float128_number) will work. In principle, it shouldn't cause those issues, but depending on the GLIBC version it might. (If libquadmath is the cause, it also explains that it works with -static as libgfortran only statically links libquadmath if needed.)
[Bug middle-end/55116] [4.8 Regression] LRA failed to decompose ASHIFT
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55116 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added Status|REOPENED|RESOLVED Resolution||FIXED --- Comment #12 from H.J. Lu hjl.tools at gmail dot com 2012-10-30 22:08:22 UTC --- Fixed by: http://gcc.gnu.org/ml/gcc-cvs/2012-10/msg01112.html
[Bug libfortran/54012] printf crash with -lgfortran
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54012 --- Comment #11 from Sergey Rodionov astroseger at gmail dot com 2012-10-30 22:37:40 UTC --- (In reply to comment #10) (In reply to comment #9) ldd bad: linux-vdso.so.1 = (0x7fffd97ff000) libquadmath.so.0 = /usr/lib64/libquadmath.so.0 (0x7f74e80ec000) Could you try linking libquadmath directly instead of libgfortran (which implies libquadmath)? The reason is that libquadmath installs, if possible, GLIBC's printf hooks, cf. http://gcc.gnu.org/onlinedocs/libquadmath/quadmath_005fsnprintf.html and the source code at http://gcc.gnu.org/viewcvs/trunk/libquadmath/printf/quadmath-printf.c?view=markup With those hooks, printf(%Qe\n, float128_number) will work. In principle, it shouldn't cause those issues, but depending on the GLIBC version it might. (If libquadmath is the cause, it also explains that it works with -static as libgfortran only statically links libquadmath if needed.) Yes. you are right. The real problem is libquadmath. If I compile with -lquadmath it crash... But interesting that quadmath_snprintf by itself works...
[Bug rtl-optimization/55093] [4.8 Regression] [x32] -maddress-mode=long failed
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55093 --- Comment #8 from hjl at gcc dot gnu.org hjl at gcc dot gnu.org 2012-10-30 22:56:59 UTC --- Author: hjl Date: Tue Oct 30 22:56:52 2012 New Revision: 193000 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=193000 Log: Remove lra_in_progress check for ARG_POINTER_REGNUM gcc/ PR rtl-optimization/55093 * rtlanal.c (simplify_subreg_regno): Remove lra_in_progress check for ARG_POINTER_REGNUM. gcc/testsuite/ PR rtl-optimization/55093 * gcc.target/i386/pr55093.c: New file. Added: trunk/gcc/testsuite/gcc.target/i386/pr55093.c Modified: trunk/gcc/ChangeLog trunk/gcc/rtlanal.c trunk/gcc/testsuite/ChangeLog
[Bug debug/54551] DF resets some DEBUG_INSNs unnecessarily
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54551 --- Comment #8 from Alexandre Oliva aoliva at gcc dot gnu.org 2012-10-30 23:47:43 UTC --- Author: aoliva Date: Tue Oct 30 23:47:35 2012 New Revision: 193003 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=193003 Log: PR debug/54551 PR debug/54693 * valtrack.c (dead_debug_promote_uses): Assert-check that global used bit was clear and initialize entry unconditionally. Modified: trunk/gcc/ChangeLog trunk/gcc/valtrack.c
[Bug debug/54693] VTA guality issues with loops
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54693 --- Comment #12 from Alexandre Oliva aoliva at gcc dot gnu.org 2012-10-30 23:47:44 UTC --- Author: aoliva Date: Tue Oct 30 23:47:35 2012 New Revision: 193003 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=193003 Log: PR debug/54551 PR debug/54693 * valtrack.c (dead_debug_promote_uses): Assert-check that global used bit was clear and initialize entry unconditionally. Modified: trunk/gcc/ChangeLog trunk/gcc/valtrack.c
[Bug libstdc++/51823] [DR 198] reverse iterator returns uninitialized values
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51823 Dave Abrahams dave at boostpro dot com changed: What|Removed |Added CC||dave at boostpro dot com --- Comment #13 from Dave Abrahams dave at boostpro dot com 2012-10-30 23:48:36 UTC --- I think this bug is invalid, because the iterator being wrapped doesn't model ForwardIterator due to I found 24.2.5 [forward.iterators]/6, where it says: If a and b are both dereferenceable, then a == b if and only if *a and *b are bound to the same object.
[Bug libstdc++/51823] [DR 198] reverse iterator returns uninitialized values
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51823 --- Comment #14 from Jonathan Wakely redi at gcc dot gnu.org 2012-10-31 00:36:48 UTC --- Thanks, Dave. So IIUC that means a counting iterator or other iterator that stores a value internally can only be an input iterator, and so can't be used with reverse_iterator.
[Bug rtl-optimization/55093] [4.8 Regression] [x32] -maddress-mode=long failed
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55093 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution||FIXED --- Comment #9 from H.J. Lu hjl.tools at gmail dot com 2012-10-31 01:33:37 UTC --- Fixed.
[Bug middle-end/55142] New: [4.8 Regression] internal compiler error: in plus_constant, at explow.c:88
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55142
Bug #: 55142
Summary: [4.8 Regression] internal compiler error: in
plus_constant, at explow.c:88
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: hjl.to...@gmail.com
CC: rdsandif...@googlemail.com, ubiz...@gmail.com
[hjl@gnu-tools-1 delta-2006.08.03]$ cat x.c
typedef int int32_t;
typedef unsigned int uint32_t;
typedef int32_t Elf32_Sword;
typedef struct
{
Elf32_Sword d_tag;
} Elf32_Dyn;
struct link_map
{
Elf32_Dyn *l_ld;
Elf32_Dyn *l_info[34];
};
extern struct link_map _dl_rtld_map __attribute__ ((visibility (hidden)));
static void elf_get_dynamic_info (struct link_map *l)
{
Elf32_Dyn *dyn = l-l_ld;
Elf32_Dyn **info;
info = l-l_info;
while (dyn-d_tag != 0)
{
if (dyn-d_tag 11)
info[0x6eff - dyn-d_tag + 12] = dyn;
++dyn;
}
}
void
dl_start (void)
{
elf_get_dynamic_info (_dl_rtld_map);
}
[hjl@gnu-tools-1 delta-2006.08.03]$
/export/build/gnu/gcc-x32/release/usr/gcc-4.8.0-x32/bin/gcc -mx32
-mtune=generic -march=x86-64 x.c -S -O2 -fPIC -maddress-mode=long
x.c: In function ‘dl_start’:
x.c:22:37: internal compiler error: in plus_constant, at explow.c:88
info[0x6eff - dyn-d_tag + 12] = dyn;
^
0x6a656a plus_constant(machine_mode, rtx_def*, long)
/export/gnu/import/git/gcc/gcc/explow.c:88
0xb107e7 ix86_expand_move(machine_mode, rtx_def**)
/export/gnu/import/git/gcc/gcc/config/i386/i386.c:15973
0xb85c3e gen_movsi(rtx_def*, rtx_def*)
/export/gnu/import/git/gcc/gcc/config/i386/i386.md:1813
0x6c11f4 emit_move_insn_1(rtx_def*, rtx_def*)
/export/gnu/import/git/gcc/gcc/expr.c:3418
0x6c14f0 emit_move_insn(rtx_def*, rtx_def*)
/export/gnu/import/git/gcc/gcc/expr.c:3512
0x6a6d2e copy_to_mode_reg(machine_mode, rtx_def*)
/export/gnu/import/git/gcc/gcc/explow.c:645
0x825bc2 maybe_legitimize_operand
/export/gnu/import/git/gcc/gcc/optabs.c:8080
0x825bc2 maybe_legitimize_operands(insn_code, unsigned int, unsigned int,
expand_operand*)
/export/gnu/import/git/gcc/gcc/optabs.c:8142
0x825cf8 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
/export/gnu/import/git/gcc/gcc/optabs.c:8160
0x829364 expand_binop_directly
/export/gnu/import/git/gcc/gcc/optabs.c:1461
0x82773d expand_binop(machine_mode, optab_tag, rtx_def*, rtx_def*, rtx_def*,
int, optab_methods)
/export/gnu/import/git/gcc/gcc/optabs.c:1530
0x6c5d78 force_operand(rtx_def*, rtx_def*)
/export/gnu/import/git/gcc/gcc/expr.c:7057
0x6a6d52 copy_to_mode_reg(machine_mode, rtx_def*)
/export/gnu/import/git/gcc/gcc/explow.c:641
0x825bc2 maybe_legitimize_operand
/export/gnu/import/git/gcc/gcc/optabs.c:8080
0x825bc2 maybe_legitimize_operands(insn_code, unsigned int, unsigned int,
expand_operand*)
/export/gnu/import/git/gcc/gcc/optabs.c:8142
0x825cf8 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
/export/gnu/import/git/gcc/gcc/optabs.c:8160
0x825f69 maybe_emit_unop_insn(insn_code, rtx_def*, rtx_def*, rtx_code)
/export/gnu/import/git/gcc/gcc/optabs.c:3774
0x825ff8 emit_unop_insn(insn_code, rtx_def*, rtx_def*, rtx_code)
/export/gnu/import/git/gcc/gcc/optabs.c:3796
0x6c27b0 convert_modes(machine_mode, machine_mode, rtx_def*, int)
/export/gnu/import/git/gcc/gcc/expr.c:784
0x6a7161 memory_address_addr_space(machine_mode, rtx_def*, unsigned char)
/export/gnu/import/git/gcc/gcc/explow.c:429
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See http://gcc.gnu.org/bugs.html for instructions.
[hjl@gnu-tools-1 delta-2006.08.03]$
[Bug middle-end/55142] [4.8 Regression] internal compiler error: in plus_constant, at explow.c:88
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55142
H.J. Lu hjl.tools at gmail dot com changed:
What|Removed |Added
Target Milestone|--- |4.8.0
--- Comment #1 from H.J. Lu hjl.tools at gmail dot com 2012-10-31 02:21:16
UTC ---
This
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 2284703..8569418 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -12902,6 +12902,8 @@ legitimize_pic_address (rtx orig, rtx reg)
else
{
base = legitimize_pic_address (XEXP (addr, 0), reg);
+if (GET_MODE (base) != Pmode)
+ base = convert_to_mode (Pmode, base, 1);
new_rtx = legitimize_pic_address (XEXP (addr, 1),
base == reg ? NULL_RTX : reg);
fixes the testcase.
[Bug target/52498] vmsdbgout.c fails to build with --enable-werror-always
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52498 --- Comment #2 from Jorn Wolfgang Rennecke amylaar at gcc dot gnu.org 2012-10-31 03:21:10 UTC --- Author: amylaar Date: Wed Oct 31 03:21:03 2012 New Revision: 193013 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=193013 Log: PR target/52498 * vmsdbgout.c (vmsdbgout_write_source_line): Comment out names of last two parameters. Modified: trunk/gcc/ChangeLog trunk/gcc/vmsdbgout.c
