[Bug preprocessor/42014] Inconsistent column number display for "In file incuded from"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42014 Marcin Baczyński changed: What|Removed |Added CC||marbacz at gmail dot com --- Comment #5 from Marcin Baczyński --- Patch against the current trunk https://gcc.gnu.org/ml/gcc-patches/2016-06/msg00272.html
[Bug c/48116] -Wreturn-type does not work as advertised
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48116 Marcin Baczyński changed: What|Removed |Added CC||marbacz at gmail dot com --- Comment #10 from Marcin Baczyński --- Proposed patch: https://gcc.gnu.org/ml/gcc-patches/2016-06/msg00032.html
[Bug c++/65720] New: ICE with g++ 4.9.2 -frepo
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65720
Bug ID: 65720
Summary: ICE with g++ 4.9.2 -frepo
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: marbacz at gmail dot com
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Build: x86_64-pc-linux-gnu
Created attachment 35279
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35279action=edit
code giving the ice on 4.9.2
g++-4.9.2 -std=c++11 -c -frepo x.cc
x.cc: In instantiation of ‘constexpr std::tuple_T1, _T2::tuple() [with _T1 =
Acl*; _T2 = std::default_deleteAcl]’:
x.cc:50:25: required from ‘std::unique_ptr_Tp, _Dp::unique_ptr() [with _Tp
= Acl; _Dp = std::default_deleteAcl]’
x.cc:57:42: required from ‘typename std::_MakeUniq_Tp::__single_object
std::make_unique(_Args ...) [with _Tp = Acl; _Args = {}; typename
std::_MakeUniq_Tp::__single_object = std::unique_ptrAcl,
std::default_deleteAcl ]’
x.cc:60:34: required from here
x.cc:36:13: internal compiler error: in repo_emit_p, at cp/repo.c:296
constexpr default_delete() noexcept = default;
^
Please submit a full bug report,
with preprocessed source if appropriate.
See https://bugs.gentoo.org/ for instructions.
g++-4.8.4 -std=c++11 -c -frepo x.cc echo OK
OK
g++-4.9.2 -v
Using built-in specs.
COLLECT_GCC=g++-4.9.2
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.9.2/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /var/tmp/portage/sys-devel/gcc-4.9.2/work/gcc-4.9.2/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.9.2
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.2/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.2
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.2/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.2/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.2/include/g++-v4
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.9.2/python
--enable-languages=c,c++,go,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--enable-checking=release --with-bugurl=https://bugs.gentoo.org/
--with-pkgversion='Gentoo Hardened 4.9.2 p1.2, pie-0.6.2' --enable-esp
--enable-libstdcxx-time --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu --enable-multilib
--with-multilib-list=m32,m64 --disable-altivec --disable-fixed-point
--enable-targets=all --disable-libgcj --enable-libgomp --disable-libmudflap
--disable-libssp --disable-libcilkrts --enable-lto --without-cloog
--enable-libsanitizer --enable-checking=yes
Thread model: posix
gcc version 4.9.2 (Gentoo Hardened 4.9.2 p1.2, pie-0.6.2)
[Bug c++/52035] internal compiler error: tree code ‘template_type_parm’ is not supported in LTO streams
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52035 Marcin Baczyński marbacz at gmail dot com changed: What|Removed |Added Known to work||4.6.2 --- Comment #4 from Marcin Baczyński marbacz at gmail dot com 2012-02-01 23:39:38 UTC --- I think this should be marked as a 4.7 regression. I just tested 4.6.2 and it works. gcc version 4.6.2 (Gentoo 4.6.2 p1.3, pie-0.5.0)
[Bug c++/52035] New: internal compiler error: tree code ‘template_type_parm’ is not supported in LTO streams
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52035 Bug #: 52035 Summary: internal compiler error: tree code ‘template_type_parm’ is not supported in LTO streams Classification: Unclassified Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: major Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: marb...@gmail.com Using GCC from svn (183666) I get an ICE while compiling QtCore with -flto: ~ # g++ -flto bug.ii bug.ii:44:1: internal compiler error: tree code ‘template_type_parm’ is not supported in LTO streams Please submit a full bug report, with preprocessed source if appropriate. See http://gcc.gnu.org/bugs.html for instructions. ~ # g++ --version g++ (svn 183666-20120128) 4.7.0 20120128 (experimental)
[Bug c++/52035] internal compiler error: tree code ‘template_type_parm’ is not supported in LTO streams
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52035 --- Comment #1 from Marcin Baczyński marbacz at gmail dot com 2012-01-29 00:46:58 UTC --- Created attachment 26497 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=26497 Reduced test case.
[Bug lto/51992] New: internal compiler error: tree code ‘target_expr’ is not supported in LTO streams
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51992 Bug #: 51992 Summary: internal compiler error: tree code ‘target_expr’ is not supported in LTO streams Classification: Unclassified Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: major Priority: P3 Component: lto AssignedTo: unassig...@gcc.gnu.org ReportedBy: marb...@gmail.com Created attachment 26456 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=26456 Reduced test case. Using GCC from SVN (183488) I get an ICE while compiling kdelibs with -flto: ~ # g++ -flto -c ksharedconfig.cpp ksharedconfig.cpp:50:1: internal compiler error: tree code ‘target_expr’ is not supported in LTO streams Please submit a full bug report, with preprocessed source if appropriate. See http://gcc.gnu.org/bugs.html for instructions. ~ # gcc -v Using built-in specs. COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/4.7.0-svn-183488-20120124/gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.7.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.7.0-svn-183488-20120124 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.0-svn-183488-20120124/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-svn-183488-20120124 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-svn-183488-20120124/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-svn-183488-20120124/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.0-svn-183488-20120124/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --disable-fixed-point --with-ppl --with-cloog --disable-ppl-version-check --with-cloog-include=/usr/include/cloog-ppl --enable-lto --enable-nls --without-included-gettext --with-system-zlib --disable-werror --enable-secureplt --disable-multilib --enable-libmudflap --enable-libssp --enable-libgomp --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-svn-183488-20120124/python --enable-checking=assert,fold,gc,misc,rtlflag,runtime,tree --disable-libgcj --disable-libquadmath --enable-languages=c,c++ --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-targets=all --with-pkgversion='svn 183488-20120124' --enable-build-with-cxx Thread model: posix gcc version 4.7.0 20120124 (experimental) (svn 183488-20120124)
[Bug rtl-optimization/52004] New: bad asm generated with -O2 -finline-functions (and maybe -ftracer)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52004 Bug #: 52004 Summary: bad asm generated with -O2 -finline-functions (and maybe -ftracer) Classification: Unclassified Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: rtl-optimization AssignedTo: unassig...@gcc.gnu.org ReportedBy: marb...@gmail.com Created attachment 26469 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=26469 Test case from GDB. Compiling attached file (from GDB 7.4) generates assembly that chokes the assembler. I'm attaching original and reduced testcases. I'm not sure whether the reduced one is still valid C but on that one you don't need -ftracer (-O2 -finline-functions is enough for the assembler to fail). gcc -O2 -finline-functions -ftracer -c linux-x86-low.c linux-x86-low.c: Assembler messages: linux-x86-low.c:2570: Error: symbol `start_i386_reg_a' is already defined linux-x86-low.c:2572: Error: symbol `end_i386_reg_a' is already defined linux-x86-low.c:2579: Error: symbol `start_i386_reg_b' is already defined linux-x86-low.c:2583: Error: symbol `end_i386_reg_b' is already defined linux-x86-low.c:2584: Error: symbol `start_i386_reg_c' is already defined linux-x86-low.c:2587: Error: symbol `end_i386_reg_c' is already defined linux-x86-low.c:2694: Error: symbol `start_i386_void_call_2_a' is already defined linux-x86-low.c:2699: Error: symbol `end_i386_void_call_2_a' is already defined linux-x86-low.c:2715: Error: symbol `start_i386_void_call_2_b' is already defined linux-x86-low.c:2718: Error: symbol `end_i386_void_call_2_b' is already defined linux-x86-low.c:2666: Error: symbol `start_i386_int_call_1_a' is already defined linux-x86-low.c:2668: Error: symbol `end_i386_int_call_1_a' is already defined linux-x86-low.c:2680: Error: symbol `start_i386_int_call_1_c' is already defined linux-x86-low.c:2683: Error: symbol `end_i386_int_call_1_c' is already defined linux-x86-low.c:2081: Error: symbol `start_amd64_void_call_2_b' is already defined linux-x86-low.c:2082: Error: symbol `end_amd64_void_call_2_b' is already defined linux-x86-low.c:2075: Error: symbol `start_amd64_void_call_2_a' is already defined linux-x86-low.c:2077: Error: symbol `end_amd64_void_call_2_a' is already defined ~ # gcc -v Using built-in specs. COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/4.7.0-svn-183541-20120125/gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.7.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.7.0-svn-183541-20120125 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.0-svn-183541-20120125/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-svn-183541-20120125 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-svn-183541-20120125/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-svn-183541-20120125/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.0-svn-183541-20120125/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --disable-fixed-point --with-ppl --with-cloog --disable-ppl-version-check --with-cloog-include=/usr/include/cloog-ppl --enable-lto --enable-nls --without-included-gettext --with-system-zlib --disable-werror --enable-secureplt --disable-multilib --enable-libmudflap --enable-libssp --enable-libgomp --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-svn-183541-20120125/python --enable-checking=assert,fold,gc,misc,rtlflag,runtime,tree --disable-libgcj --disable-libquadmath --enable-languages=c,c++ --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-targets=all --with-pkgversion='svn 183541-20120125' --enable-build-with-cxx Thread model: posix gcc version 4.7.0 20120125 (experimental) (svn 183541-20120125)
[Bug rtl-optimization/52004] bad asm generated with -O2 -finline-functions (and maybe -ftracer)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52004 --- Comment #1 from Marcin Baczynski marbacz at gmail dot com 2012-01-26 00:37:21 UTC --- Created attachment 26470 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=26470 Reduced test case.
[Bug middle-end/51984] New: ICE: SIGSEGV with -O2 -fgraphite-identity
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51984 Bug #: 51984 Summary: ICE: SIGSEGV with -O2 -fgraphite-identity Classification: Unclassified Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassig...@gcc.gnu.org ReportedBy: marb...@gmail.com With SVN rev 183488 I get the following ICE on attached code: ~ # LC_ALL=C gcc -O2 -fgraphite-identity -c ~/bug.c -o /tmp/bug.o /root/bug.c: In function 'pack_states': /root/bug.c:8:1: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See http://gcc.gnu.org/bugs.html for instructions. ~ # gcc -v Using built-in specs. COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/4.7.0-svn-183488-20120124/gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.7.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.7.0-svn-183488-20120124 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.0-svn-183488-20120124/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-svn-183488-20120124 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-svn-183488-20120124/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-svn-183488-20120124/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.0-svn-183488-20120124/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --disable-fixed-point --with-ppl --with-cloog --disable-ppl-version-check --with-cloog-include=/usr/include/cloog-ppl --enable-lto --enable-nls --without-included-gettext --with-system-zlib --disable-werror --enable-secureplt --disable-multilib --enable-libmudflap --enable-libssp --enable-libgomp --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-svn-183488-20120124/python --enable-checking=assert,fold,gc,misc,rtlflag,runtime,tree --disable-libgcj --disable-libquadmath --enable-languages=c,c++ --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-targets=all --with-pkgversion='svn 183488-20120124' --enable-build-with-cxx Thread model: posix
[Bug middle-end/51984] ICE: SIGSEGV with -O2 -fgraphite-identity
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51984 --- Comment #1 from Marcin Baczynski marbacz at gmail dot com 2012-01-24 22:00:18 UTC --- Created attachment 26447 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=26447 Reduced test case.
[Bug middle-end/51939] New: ICE: in compute_affine_dependence, at tree-data-ref.c:4103
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51939 Bug #: 51939 Summary: ICE: in compute_affine_dependence, at tree-data-ref.c:4103 Classification: Unclassified Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassig...@gcc.gnu.org ReportedBy: marb...@gmail.com Created attachment 26408 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=26408 Reduced test case This fails with gcc-4.7.0-alpha20120114, works with gcc-4.5.3. Reduced test case attached. x86_64-pc-linux-gnu-gcc-4.7.0-alpha20120114 -O1 -fcheck-data-deps -D_LARGEFILE64_SOURCE=1 -c bug.c (Number of distance vectors differ: Banerjee has 3, Omega has 2. Banerjee dist vectors: 0 0 0 1 1 0 Omega dist vectors: 0 0 1 0 data dependence relation: (Data Dep: #(Data Ref: # bb: 9 # stmt: D.1732_13 = s_4(D)-strstart; # ref: s_4(D)-strstart; # base_object: s_4(D)-strstart; #) #(Data Ref: # bb: 9 # stmt: s_4(D)-strstart = D.1733_14; # ref: s_4(D)-strstart; # base_object: s_4(D)-strstart; #) inner loop index: 0 loop nest: (1 2 ) distance_vector: 0 0 distance_vector: 1 0 direction_vector: == direction_vector: += ) ) bug.c: In function ‘deflate’: bug.c:14:5: internal compiler error: in compute_affine_dependence, at tree-data-ref.c:4103 Please submit a full bug report, with preprocessed source if appropriate. x86_64-pc-linux-gnu-gcc-4.7.0-alpha20120114 -v Using built-in specs. COLLECT_GCC=x86_64-pc-linux-gnu-gcc-4.7.0-alpha20120114 COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.7.0-alpha20120114/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /var/tmp/portage/sys-devel/gcc-4.7.0_alpha20120114/work/gcc-4.7-20120114/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.7.0-alpha20120114 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.0-alpha20120114/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-alpha20120114 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-alpha20120114/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-alpha20120114/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.0-alpha20120114/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --disable-fixed-point --with-ppl --with-cloog --disable-ppl-version-check --with-cloog-include=/usr/include/cloog-ppl --enable-lto --enable-nls --without-included-gettext --with-system-zlib --disable-werror --enable-secureplt --disable-multilib --enable-libmudflap --disable-libssp --enable-libgomp --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.7.0-alpha20120114/python --enable-checking=yes --disable-libgcj --disable-libquadmath --enable-languages=c,c++ --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-targets=all --with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo 4.7.0_alpha20120114' Thread model: posix gcc version 4.7.0-alpha20120114 20120114 (experimental) (Gentoo 4.7.0_alpha20120114)
[Bug lto/43455] New: Compiler hang with -O2 -flto
gcc -O2 -flto 1.c 2.c hangs.
-O1 or without -flto compiles and links just fine.
1.c:
struct bar {int x;};
extern struct bar foo(void);
int main()
{
struct bar x=foo();
return 0;
}
2.c:
typedef struct{int x;} bar;
bar foo (void)
{
bar x;
return x;
}
gcc -v:
Using built-in specs.
COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/4.5.0-alpha20100318/gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.5.0-alpha20100318/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-4.5.0_alpha20100318/work/gcc-4.5-20100318/configure
--prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.5.0-alpha20100318
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.5.0-alpha20100318/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.5.0-alpha20100318
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.5.0-alpha20100318/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.5.0-alpha20100318/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.5.0-alpha20100318/include/g++-v4
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec
--disable-fixed-point --with-ppl --with-cloog --enable-nls
--without-included-gettext --with-system-zlib --disable-checking
--disable-werror --enable-secureplt --enable-multilib --enable-libmudflap
--disable-libssp --enable-libgomp --enable-cld
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.5.0-alpha20100318/python
--disable-libgcj --enable-languages=c,c++ --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo
4.5.0_alpha20100318' --enable-lto
Thread model: posix
gcc version 4.5.0-alpha20100318 20100318 (experimental) (Gentoo
4.5.0_alpha20100318)
--
Summary: Compiler hang with -O2 -flto
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: marbacz at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43455
[Bug lto/43455] Compiler hang with -O2 -flto
--- Comment #2 from marbacz at gmail dot com 2010-03-20 22:25 ---
Passing -m32 make the hang disappear.
Below is slightly less reduced version of previous test case. It comes from gnu
bc.
It causes ICE. Uncommenting declarations changes ICE into hang. ICE doesn't go
away with -m32.
gcc -O2 -flto numeric.c eval.c
===
In file included from eval.c:28:0,
from numeric.c:19,
from :0:
eval.c: In function 'dc_evalstr':
eval.c:30:10: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See http://bugs.gentoo.org/ for instructions.
lto-wrapper: /usr/x86_64-pc-linux-gnu/gcc-bin/4.5.0-alpha20100318/gcc returned
1 exit status
collect2: lto-wrapper returned 1 exit status
===
eval.c:
typedef enum {DC_UNINITIALIZED, DC_NUMBER, DC_STRING} dc_value_type;
typedef struct dc_number *dc_num;
typedef struct dc_string *dc_str;
typedef struct {
dc_value_type dc_type;
union { dc_num number; dc_str string; } v;
} dc_data;
const char *progname;
int main()
{
return 0;
}
/*
int dc_func(int a, int b, int c);
void dc_push(dc_data);
dc_data dc_getnum(int a, int b, int c);
*/
static const char *input_str_string;
int
dc_evalstr (dc_data *string)
{
const char *s;
int peekc;
switch (dc_func(0, 0, 0)){
case 0:
input_str_string = s - 1;
dc_push(dc_getnum(0, 0, 0));
s = input_str_string;
if (peekc != -1)
--s;
break;
}
return 0;
}
===
numeric.c
===
typedef enum {DC_UNINITIALIZED, DC_NUMBER, DC_STRING} dc_value_type;
typedef struct bc_struct *dc_num;
typedef struct dc_string *dc_str;
typedef struct {
dc_value_type dc_type;
union {
dc_num number;
dc_str string;
} v;
} dc_data;
dc_data dc_getnum(int input, int ibase, int readahead)
{
dc_data x;
return x;
}
int dc_func(int a, int b, int c){return 0;}
void dc_push(dc_data a){}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43455
[Bug middle-end/43323] New: Wrong code with bitfields and type casting.
When compiled with gcc 4.4.[34] The following code prints fe 01, while it
should fe ff. Current svn trunk produces correct results.
No flags needed to reproduce.
extern int printf(const char * __restrict, ...);
int main()
{
struct { unsigned bar:1; } foo;
foo.bar = 0x1;
printf(%02x\n, (unsigned char)(foo.bar * 0xfe));
printf(%02x\n, (unsigned char)(foo.bar * 0xff));
return 0;
}
gcc -v:
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-svn/configure --enable-stage1-languages-c
--enable-languages=c,c++
Thread model: posix
gcc version 4.4.4 20100309 (prerelease) (GCC)
--
Summary: Wrong code with bitfields and type casting.
Product: gcc
Version: 4.4.4
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: marbacz at gmail dot com
GCC build triplet: x86_64-linux-gnu
GCC host triplet: x86_64-linux-gnu
GCC target triplet: x86_64-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43323
