[Bug fortran/90329] Incompatibility between gfortran and C lapack calls
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90329
--- Comment #46 from Kaz Kylheku ---
C pseudocode in light of previous comment:
double abused_fortran_fn(double x, double y, char str[1], int len)
{
if (len != 1)
return abused_fortran_fn(x, y, str, 1); /* full call, not tail! */
return tail_call_sibling(x, y, str, len);
}
[Bug fortran/90329] Incompatibility between gfortran and C lapack calls
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90329 Kaz Kylheku changed: What|Removed |Added CC||kkylheku at gmail dot com --- Comment #45 from Kaz Kylheku --- Hi everyone. Pardon my ignorance of C-Fortran bridging matters, but does any of the following make sense? The Fortran subroutine has no idea whether the word where the argument is supposed to be is really the argument, or just some unrelated part of the stack (because the caller didn't pass the argument). Can't the Fortran routine check whether that word has the expected value 1? Then in that case, just pretend it's the argument (whether that is the case, or whether that 1 is just a spurious value that looks like the right argument). In this case, just do all the tail calling to sibling routines happily, who will get the right string length. If the word does not have value 1, then, uh oh: treat it suspiciously! The function can then *call itself* with with a *copy* of the arguments, including the correct length 1. When that call returns, it returns. The recursively invoked activation will of course the value of 1, and then act cool. The downside is that there is a performance penalty with this check and extra recursive call. When the callers are fixed to pass the argument, the penalty is reduced, but the check is still being made.
[Bug c++/85125] constant expression with const_cast UB does not emit error
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85125 --- Comment #4 from David Stone --- *** Bug 86623 has been marked as a duplicate of this bug. ***
[Bug c++/55004] [meta-bug] constexpr issues
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55004 Bug 55004 depends on bug 86623, which changed state. Bug 86623 Summary: constexpr evaluation fails to give an error for modifying a const object https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86623 What|Removed |Added Status|NEW |RESOLVED Resolution|--- |DUPLICATE
[Bug c++/86623] constexpr evaluation fails to give an error for modifying a const object
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86623 David Stone changed: What|Removed |Added Status|NEW |RESOLVED CC||david at doublewise dot net Resolution|--- |DUPLICATE --- Comment #2 from David Stone --- Closing as duplicate *** This bug has been marked as a duplicate of bug 85125 ***
[Bug c++/85125] constant expression with const_cast UB does not emit error
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85125
David Stone changed:
What|Removed |Added
CC||david at doublewise dot net
--- Comment #3 from David Stone ---
Here is a reproduction that does not require const_cast:
struct S {
int a = 1;
int * ptr = &a;
};
constexpr bool f() {
auto const s = S{};
*s.ptr = 2;
return s.a == 2;
}
static_assert(f());
See it live: https://godbolt.org/z/30O7_j
[Bug c++/90947] [9/10 Regression] Simple lookup table of array of strings is miscompiled
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90947 Martin Sebor changed: What|Removed |Added Keywords||patch --- Comment #4 from Martin Sebor --- Patch: https://gcc.gnu.org/ml/gcc-patches/2019-06/msg01365.html
[Bug c++/90909] [10 Regression] call devirtualized to pure virtual
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90909 --- Comment #7 from paolo at gcc dot gnu.org --- Author: paolo Date: Fri Jun 21 21:58:19 2019 New Revision: 272576 URL: https://gcc.gnu.org/viewcvs?rev=272576&root=gcc&view=rev Log: 2019-06-21 Paolo Carlini PR c++/90909 * g++.dg/other/final7.C: New. Added: trunk/gcc/testsuite/g++.dg/other/final7.C Modified: trunk/gcc/testsuite/ChangeLog
[Bug go/86535] FreeBSD/PowerPC64 - Building Go Frontend support for gcc 7.3.0 fails
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86535 --- Comment #21 from Curtis Hamilton --- Created attachment 46510 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46510&action=edit FreeBSD/X86_64 GCC8 build log GccGo doesn't build on FreeBSD X86 either. It has similar issues to those I got on powerpc64. Attached is the build log.
[Bug c++/67184] Missed optimization with C++11 final specifier
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67184 Paolo Carlini changed: What|Removed |Added Status|RESOLVED|REOPENED Resolution|FIXED |--- Assignee|paolo.carlini at oracle dot com|unassigned at gcc dot gnu.org --- Comment #13 from Paolo Carlini --- Unfortunately I have to re-open this: the fix, as-is, caused c++/90909.
[Bug c++/90909] [10 Regression] call devirtualized to pure virtual
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90909 Paolo Carlini changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED Assignee|paolo.carlini at oracle dot com|unassigned at gcc dot gnu.org --- Comment #6 from Paolo Carlini --- Fixed by reverting completely (for the time being) the offending change.
[Bug c++/90909] [10 Regression] call devirtualized to pure virtual
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90909 --- Comment #5 from paolo at gcc dot gnu.org --- Author: paolo Date: Fri Jun 21 20:47:40 2019 New Revision: 272574 URL: https://gcc.gnu.org/viewcvs?rev=272574&root=gcc&view=rev Log: /cp 2019-06-21 Paolo Carlini PR c++/90909 Revert: 2019-05-21 Paolo Carlini PR c++/67184 PR c++/69445 * call.c (build_over_call): Devirtualize when the final overrider comes from the base. /testsuite 2019-06-21 Paolo Carlini PR c++/90909 Revert: 2019-05-21 Paolo Carlini PR c++/67184 PR c++/69445 * g++.dg/other/final3.C: New. * g++.dg/other/final4.C: Likewise. * g++.dg/other/final5.C: Likewise. * g++.dg/other/final6.C: New. Removed: trunk/gcc/testsuite/g++.dg/other/final3.C trunk/gcc/testsuite/g++.dg/other/final4.C trunk/gcc/testsuite/g++.dg/other/final5.C
[Bug tree-optimization/69445] Fail to devirtualize call to base class function even though derived class type is 'final'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69445 --- Comment #5 from paolo at gcc dot gnu.org --- Author: paolo Date: Fri Jun 21 20:47:40 2019 New Revision: 272574 URL: https://gcc.gnu.org/viewcvs?rev=272574&root=gcc&view=rev Log: /cp 2019-06-21 Paolo Carlini PR c++/90909 Revert: 2019-05-21 Paolo Carlini PR c++/67184 PR c++/69445 * call.c (build_over_call): Devirtualize when the final overrider comes from the base. /testsuite 2019-06-21 Paolo Carlini PR c++/90909 Revert: 2019-05-21 Paolo Carlini PR c++/67184 PR c++/69445 * g++.dg/other/final3.C: New. * g++.dg/other/final4.C: Likewise. * g++.dg/other/final5.C: Likewise. * g++.dg/other/final6.C: New. Removed: trunk/gcc/testsuite/g++.dg/other/final3.C trunk/gcc/testsuite/g++.dg/other/final4.C trunk/gcc/testsuite/g++.dg/other/final5.C
[Bug c++/67184] Missed optimization with C++11 final specifier
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67184 --- Comment #12 from paolo at gcc dot gnu.org --- Author: paolo Date: Fri Jun 21 20:47:40 2019 New Revision: 272574 URL: https://gcc.gnu.org/viewcvs?rev=272574&root=gcc&view=rev Log: /cp 2019-06-21 Paolo Carlini PR c++/90909 Revert: 2019-05-21 Paolo Carlini PR c++/67184 PR c++/69445 * call.c (build_over_call): Devirtualize when the final overrider comes from the base. /testsuite 2019-06-21 Paolo Carlini PR c++/90909 Revert: 2019-05-21 Paolo Carlini PR c++/67184 PR c++/69445 * g++.dg/other/final3.C: New. * g++.dg/other/final4.C: Likewise. * g++.dg/other/final5.C: Likewise. * g++.dg/other/final6.C: New. Removed: trunk/gcc/testsuite/g++.dg/other/final3.C trunk/gcc/testsuite/g++.dg/other/final4.C trunk/gcc/testsuite/g++.dg/other/final5.C
[Bug c++/90909] [10 Regression] call devirtualized to pure virtual
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90909 --- Comment #4 from paolo at gcc dot gnu.org --- Author: paolo Date: Fri Jun 21 20:46:51 2019 New Revision: 272573 URL: https://gcc.gnu.org/viewcvs?rev=272573&root=gcc&view=rev Log: /cp 2019-06-21 Paolo Carlini PR c++/90909 Revert: 2019-05-21 Paolo Carlini PR c++/67184 PR c++/69445 * call.c (build_over_call): Devirtualize when the final overrider comes from the base. /testsuite 2019-06-21 Paolo Carlini PR c++/90909 Revert: 2019-05-21 Paolo Carlini PR c++/67184 PR c++/69445 * g++.dg/other/final3.C: New. * g++.dg/other/final4.C: Likewise. * g++.dg/other/final5.C: Likewise. * g++.dg/other/final6.C: New. Added: trunk/gcc/testsuite/g++.dg/other/final6.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/call.c trunk/gcc/testsuite/ChangeLog
[Bug c++/67184] Missed optimization with C++11 final specifier
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67184 --- Comment #11 from paolo at gcc dot gnu.org --- Author: paolo Date: Fri Jun 21 20:46:51 2019 New Revision: 272573 URL: https://gcc.gnu.org/viewcvs?rev=272573&root=gcc&view=rev Log: /cp 2019-06-21 Paolo Carlini PR c++/90909 Revert: 2019-05-21 Paolo Carlini PR c++/67184 PR c++/69445 * call.c (build_over_call): Devirtualize when the final overrider comes from the base. /testsuite 2019-06-21 Paolo Carlini PR c++/90909 Revert: 2019-05-21 Paolo Carlini PR c++/67184 PR c++/69445 * g++.dg/other/final3.C: New. * g++.dg/other/final4.C: Likewise. * g++.dg/other/final5.C: Likewise. * g++.dg/other/final6.C: New. Added: trunk/gcc/testsuite/g++.dg/other/final6.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/call.c trunk/gcc/testsuite/ChangeLog
[Bug tree-optimization/69445] Fail to devirtualize call to base class function even though derived class type is 'final'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69445 --- Comment #4 from paolo at gcc dot gnu.org --- Author: paolo Date: Fri Jun 21 20:46:51 2019 New Revision: 272573 URL: https://gcc.gnu.org/viewcvs?rev=272573&root=gcc&view=rev Log: /cp 2019-06-21 Paolo Carlini PR c++/90909 Revert: 2019-05-21 Paolo Carlini PR c++/67184 PR c++/69445 * call.c (build_over_call): Devirtualize when the final overrider comes from the base. /testsuite 2019-06-21 Paolo Carlini PR c++/90909 Revert: 2019-05-21 Paolo Carlini PR c++/67184 PR c++/69445 * g++.dg/other/final3.C: New. * g++.dg/other/final4.C: Likewise. * g++.dg/other/final5.C: Likewise. * g++.dg/other/final6.C: New. Added: trunk/gcc/testsuite/g++.dg/other/final6.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/call.c trunk/gcc/testsuite/ChangeLog
[Bug c++/61490] accepts-invalid: qualified-name in friend function definition
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61490 --- Comment #2 from Marek Polacek --- Author: mpolacek Date: Fri Jun 21 20:43:47 2019 New Revision: 272572 URL: https://gcc.gnu.org/viewcvs?rev=272572&root=gcc&view=rev Log: PR c++/61490 - qualified-id in friend function definition. * decl.c (grokdeclarator): Diagnose qualified-id in friend function definition. Improve location for diagnostics of friend functions. * g++.dg/diagnostic/friend2.C: New test. * g++.dg/diagnostic/friend3.C: New test. Added: trunk/gcc/testsuite/g++.dg/diagnostic/friend2.C trunk/gcc/testsuite/g++.dg/diagnostic/friend3.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/decl.c trunk/gcc/testsuite/ChangeLog
[Bug c++/61490] accepts-invalid: qualified-name in friend function definition
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61490 Marek Polacek changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #3 from Marek Polacek --- Fixed.
[Bug c++/60223] [c++11] ICE with C++11-style default template parameter
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60223 --- Comment #8 from Marek Polacek --- Fixed on trunk but I'll leave it open because I want to fix it for 9.2 also.
[Bug fortran/51991] Wrong error message with variables named "SAVE*"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51991 --- Comment #17 from kargl at gcc dot gnu.org --- (In reply to Dominique d'Humieres from comment #15) > Compiling the test in comment 10 gives now > > pr51991_2.f90:3:7: > > 3 | save1 = something wrong > | 1 > Error: Invalid character in name at (1) > pr51991_2.f90:8:6: > > 8 | data1 = something wrong > | 1 > Error: Syntax error in DATA statement at (1) > > The first error before revision r272556 was > > pr51991_2.f90:3:6: > > 3 | save1 = something wrong > | 1 > Error: Syntax error in SAVE statement at (1) > > It seems there is a similar problem with DATA (and may be others) and the > location of (1) is not set to the right place. I just realized that your code isn't even close to conforming. subroutine sav integer :: save1 save1 = something wrong end subroutine sav What part of "something wrong" is a valid RHS expression Please don't waste my time with silly code. For the record, this compiles just fine subroutine sav integer :: save1 save1 = 1 end subroutine sav
[Bug c++/60223] [c++11] ICE with C++11-style default template parameter
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60223
--- Comment #7 from Marek Polacek ---
Author: mpolacek
Date: Fri Jun 21 20:32:06 2019
New Revision: 272571
URL: https://gcc.gnu.org/viewcvs?rev=272571&root=gcc&view=rev
Log:
PR c++/60223 - ICE with T{} in non-deduced context.
* pt.c (unify): Allow COMPOUND_LITERAL_P in a non-deduced context.
* g++.dg/cpp0x/nondeduced1.C: New test.
* g++.dg/cpp0x/nondeduced2.C: New test.
* g++.dg/cpp0x/nondeduced3.C: New test.
* g++.dg/cpp0x/nondeduced4.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/nondeduced1.C
trunk/gcc/testsuite/g++.dg/cpp0x/nondeduced2.C
trunk/gcc/testsuite/g++.dg/cpp0x/nondeduced3.C
trunk/gcc/testsuite/g++.dg/cpp0x/nondeduced4.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
[Bug fortran/67884] Missing error message on required allocatable attribute
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67884 kargl at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P4 Status|NEW |RESOLVED CC||kargl at gcc dot gnu.org Resolution|--- |FIXED Assignee|unassigned at gcc dot gnu.org |kargl at gcc dot gnu.org Target Milestone|--- |10.0 --- Comment #4 from kargl at gcc dot gnu.org --- Fixed on trunk. Thanks for bug report.
[Bug c++/64235] Internal compiler error (Segmentation fault)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64235 --- Comment #4 from Marek Polacek --- Author: mpolacek Date: Fri Jun 21 20:26:54 2019 New Revision: 272570 URL: https://gcc.gnu.org/viewcvs?rev=272570&root=gcc&view=rev Log: PR c++/64235 - missing syntax error with invalid alignas. * parser.c (cp_parser_std_attribute_spec): Commit to tentative parse if there's a missing close paren. * g++.dg/parse/alignas1.C: New test. Added: trunk/gcc/testsuite/g++.dg/parse/alignas1.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/parser.c trunk/gcc/testsuite/ChangeLog
[Bug c++/64235] Internal compiler error (Segmentation fault)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64235 Marek Polacek changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #5 from Marek Polacek --- Fixed.
[Bug fortran/67884] Missing error message on required allocatable attribute
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67884 --- Comment #3 from kargl at gcc dot gnu.org --- Author: kargl Date: Fri Jun 21 20:24:01 2019 New Revision: 272569 URL: https://gcc.gnu.org/viewcvs?rev=272569&root=gcc&view=rev Log: 2019-06-21 Steven G. Kargl PR fortran/67884 * resolve.c (deferred_requirements) : Check only the result variable. (resolve_fl_procedure): Check deferred requirements on functions. 2019-06-21 Steven G. Kargl PR fortran/67884 * gfortran.dg/dummy_procedure_8.f90: Remove a test that is ... * gfortran.dg/pr67884.f90: ... covered here. New test. Added: trunk/gcc/testsuite/gfortran.dg/pr67884.f90 Modified: trunk/gcc/fortran/ChangeLog trunk/gcc/fortran/resolve.c trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gfortran.dg/dummy_procedure_8.f90
[Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797 --- Comment #82 from Jens-S. Vöckler --- I had some prior issues with w.r.t 32bits. Tinkering, this script does build a gcc 9.1 on macOS 10.14.5 on APFS. I didn't create it for beauty, and it's specific to my setup. The resulting compiler is unable to generate 32bit stuff. #!/bin/bash # here="$PWD" trap 'cd "$here"' EXIT prefix=/opt/gcc-9.1.0 if [[ ! -d $prefix ]]; then echo "FATAL: No such directory: $prefix" 1>&2 exit 1 fi # fix for fink interference PATH=$(echo $PATH | \ tr -d '\012' | \ tr ':' '\012' | \ fgrep -v /sw/bin | \ tr '\012' ':') export PATH="$PATH:/sw/bin"; echo "PATH=$PATH" set -v test -d gcc-9.1.0 || gtar xJf gcc-9.1.0.tar.xz cd gcc-9.1.0 test -d gmp-6.1.2 || gtar xJf ../gmp-6.1.2.tar.xz test -e gmp || ln -s gmp-6.1.2 gmp test -d mpfr-4.0.2 || gtar xJf ../mpfr-4.0.2.tar.xz test -e mpfr || ln -s mpfr-4.0.2 mpfr test -d mpc-1.1.0 || gtar xzf ../mpc-1.1.0.tar.gz test -e mpc || ln -s mpc-1.1.0 mpc test -d isl-0.18 || gtar xjf ../isl-0.18.tar.bz2 test -e isl || ln -s isl-0.18 isl mkdir objdir cd objdir set +v ../configure "--prefix=$prefix" \ --enable-languages=c,c++,fortran,lto,objc,obj-c++ \ --with-system-zlib \ --disable-multilib \ --with-cpu=core2 \ --enable-threads \ "--with-sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk" test $? -eq 0 || exit 2 make -j 3 BOOT_CFLAGS='-O' bootstrap test $? -eq 0 || exit 42 make install ---&< snip, snip &<--- $ file /opt/gcc-9.1.0/bin/g++ /opt/gcc-9.1.0/bin/g++: Mach-O 64-bit executable x86_64 $ /opt/gcc/bin/g++ hello.cc -o hello $ file hello hello: Mach-O 64-bit executable x86_64 $ otool -L hello hello: /opt/gcc-9.1.0/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.26.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1252.250.1) /opt/gcc-9.1.0/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0) $ ./hello Hello, world
[Bug c++/90490] [9 Regression] ICE on noexcept with decltype expression
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90490 Marek Polacek changed: What|Removed |Added Summary|[9/10 Regression] ICE on|[9 Regression] ICE on |noexcept with decltype |noexcept with decltype |expression |expression --- Comment #7 from Marek Polacek --- Fixed on trunk so far.
[Bug c++/90490] [9/10 Regression] ICE on noexcept with decltype expression
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90490 --- Comment #6 from Marek Polacek --- Author: mpolacek Date: Fri Jun 21 20:19:24 2019 New Revision: 272568 URL: https://gcc.gnu.org/viewcvs?rev=272568&root=gcc&view=rev Log: PR c++/90490 - fix decltype issues in noexcept-specifier. * except.c (build_noexcept_spec): Call instantiate_non_dependent_expr_sfinae before build_converted_constant_expr instead of calling instantiate_non_dependent_expr after it. Add processing_template_decl_sentinel. * g++.dg/cpp0x/noexcept43.C: New test. * g++.dg/cpp0x/noexcept44.C: New test. Added: trunk/gcc/testsuite/g++.dg/cpp0x/noexcept43.C trunk/gcc/testsuite/g++.dg/cpp0x/noexcept44.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/except.c trunk/gcc/testsuite/ChangeLog
[Bug c++/90875] warnings about switch values outside range don't have associated option
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90875 Matthew Beliveau changed: What|Removed |Added Status|REOPENED|RESOLVED Resolution|--- |FIXED --- Comment #5 from Matthew Beliveau --- Actually fixed now.
[Bug other/44209] [meta-bug] Some warnings are not linked to diagnostics options
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44209 Bug 44209 depends on bug 90875, which changed state. Bug 90875 Summary: warnings about switch values outside range don't have associated option https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90875 What|Removed |Added Status|REOPENED|RESOLVED Resolution|--- |FIXED
[Bug c++/90875] warnings about switch values outside range don't have associated option
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90875 --- Comment #4 from Matthew Beliveau --- Author: mbelivea Date: Fri Jun 21 19:58:32 2019 New Revision: 272567 URL: https://gcc.gnu.org/viewcvs?rev=272567&root=gcc&view=rev Log: PR c++/90875 - added -Wswitch-outside-range option Added: trunk/gcc/testsuite/c-c++-common/Wswitch-outside-range-1.c trunk/gcc/testsuite/c-c++-common/Wswitch-outside-range-2.c trunk/gcc/testsuite/c-c++-common/Wswitch-outside-range-3.c trunk/gcc/testsuite/c-c++-common/Wswitch-outside-range-4.c
[Bug fortran/90813] [10 regression] gfortran.dg/proc_ptr_51.f90 fails (SIGSEGV) after 272084
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90813 Thomas Koenig changed: What|Removed |Added Status|WAITING |NEW --- Comment #7 from Thomas Koenig --- I think we can move this to NEW.
[Bug fortran/90937] [7/8/9 Regression] ICE: in gfc_get_symbol_decl, at fortran/trans-decl.c:1538
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90937 Thomas Koenig changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #10 from Thomas Koenig --- Fixed on all open branches, closing.
[Bug fortran/90937] [7/8/9 Regression] ICE: in gfc_get_symbol_decl, at fortran/trans-decl.c:1538
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90937 --- Comment #9 from Thomas Koenig --- Author: tkoenig Date: Fri Jun 21 19:32:23 2019 New Revision: 272566 URL: https://gcc.gnu.org/viewcvs?rev=272566&root=gcc&view=rev Log: 2019-06-21 Thomas Koenig Backport from trunk PR fortran/90937 * trans-types.c (get_formal_from_actual_arglist): Get symbol from current namespace so it will be freed later. If symbol is of type character, get an empty character length. 2019-06-21 Thomas Koenig Backport from trunk PR fortran/90937 * gfortran.dg/external_procedure_4.f90: New test. Modified: branches/gcc-7-branch/gcc/fortran/ChangeLog branches/gcc-7-branch/gcc/fortran/trans-types.c branches/gcc-7-branch/gcc/testsuite/ChangeLog
[Bug fortran/90937] [7/8/9 Regression] ICE: in gfc_get_symbol_decl, at fortran/trans-decl.c:1538
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90937 --- Comment #8 from Thomas Koenig --- Author: tkoenig Date: Fri Jun 21 19:30:51 2019 New Revision: 272565 URL: https://gcc.gnu.org/viewcvs?rev=272565&root=gcc&view=rev Log: 2019-06-21 Thomas Koenig Backport from trunk PR fortran/90937 * trans-types.c (get_formal_from_actual_arglist): Get symbol from current namespace so it will be freed later. If symbol is of type character, get an empty character length. 2019-06-21 Thomas Koenig Backport from trunk PR fortran/90937 * gfortran.dg/external_procedure_4.f90: New test. Added: branches/gcc-8-branch/gcc/testsuite/gfortran.dg/external_procedure_4.f90 Modified: branches/gcc-8-branch/gcc/fortran/ChangeLog branches/gcc-8-branch/gcc/fortran/trans-types.c branches/gcc-8-branch/gcc/testsuite/ChangeLog
[Bug fortran/90937] [7/8/9 Regression] ICE: in gfc_get_symbol_decl, at fortran/trans-decl.c:1538
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90937 --- Comment #7 from Thomas Koenig --- Author: tkoenig Date: Fri Jun 21 19:28:54 2019 New Revision: 272564 URL: https://gcc.gnu.org/viewcvs?rev=272564&root=gcc&view=rev Log: 2019-06-21 Thomas Koenig Backport from trunk PR fortran/90937 * trans-types.c (get_formal_from_actual_arglist): Get symbol from current namespace so it will be freed later. If symbol is of type character, get an empty character length. 2019-06-21 Thomas Koenig Backport from trunk PR fortran/90937 * gfortran.dg/external_procedure_4.f90: New test. Added: branches/gcc-9-branch/gcc/testsuite/gfortran.dg/external_procedure_4.f90 Modified: branches/gcc-9-branch/gcc/fortran/ChangeLog branches/gcc-9-branch/gcc/fortran/trans-types.c branches/gcc-9-branch/gcc/testsuite/ChangeLog
[Bug c++/90960] declaring a member function with a computed typedef is confused as a data member definition
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90960 --- Comment #2 from Alisdair Meredith --- I agree the second problem looks like a dupe. It has since been pointed out to me that the first error is indeed correct, and simply the error message is less than helpful: [temp.spec]p8 of C++17 says: "If a function declaration acquired its function type through a dependent type (17.6.2.1) without using the syntactic form of a function declarator, the program is ill-formed." I believe this constraint is new to C++17, but so are exception specifications in the type system that I rely on, so this bug report could be safely closed, or treated simply as a feature request for a clearer diagnostic message that members of dependent type can never be function declarations.
[Bug other/44209] [meta-bug] Some warnings are not linked to diagnostics options
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44209 Bug 44209 depends on bug 90875, which changed state. Bug 90875 Summary: warnings about switch values outside range don't have associated option https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90875 What|Removed |Added Status|RESOLVED|REOPENED Resolution|FIXED |---
[Bug c++/90875] warnings about switch values outside range don't have associated option
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90875 Marek Polacek changed: What|Removed |Added Status|RESOLVED|REOPENED Resolution|FIXED |--- --- Comment #3 from Marek Polacek --- You forgot to add the new tests.
[Bug libstdc++/90920] [9 Regression] ABI incompatibility in std::rotate
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90920 Jonathan Wakely changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #8 from Jonathan Wakely --- .
[Bug libstdc++/90920] [9 Regression] ABI incompatibility in std::rotate
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90920 --- Comment #7 from Jonathan Wakely --- Fixed for 9.2
[Bug c++/90961] New: awful diagnostics for noexcept-expression with type name
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90961 Bug ID: 90961 Summary: awful diagnostics for noexcept-expression with type name Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: mpolacek at gcc dot gnu.org Target Milestone: --- For static_assert(noexcept(void)); we generate a host of bogus errors: q2.C:1:24: error: expected primary-expression before ‘void’ 1 | static_assert(noexcept(void)); |^~~~ q2.C:1:24: error: expected ‘)’ before ‘void’ 1 | static_assert(noexcept(void)); | ~^~~~ |) q2.C:1:24: error: expected ‘,’ before ‘void’ 1 | static_assert(noexcept(void)); |^~~~ |, q2.C:1:24: error: expected string-literal before ‘void’ 1 | static_assert(noexcept(void)); |^~~~ q2.C:1:24: error: expected ‘)’ before ‘void’ 1 | static_assert(noexcept(void)); | ~ ^~~~ |) q2.C:1:29: error: expected ‘;’ before ‘)’ token 1 | static_assert(noexcept(void)); | ^ | ; q2.C:1:29: error: expected unqualified-id before ‘)’ token Instead, we should generate one error saying something like "type names not allowed".
[Bug target/83250] _mm256_zextsi128_si256 missing for AVX2 zero extension
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83250
Agner Fog changed:
What|Removed |Added
CC||agner at agner dot org
--- Comment #1 from Agner Fog ---
I can confirm this bug.
_mm256_zextsi128_si256 and several similar intrinsic functions are supported by
Clang and MS compilers, but not by Gcc.
Test case:
#include
__m256i zero_upper_part(__m256i a) {
return _mm256_zextsi128_si256(_mm256_castsi256_si128(a));
}
Result:
test.cpp: In function '__m256i zero_upper_part(__m256i)':
test.cpp:6:12: error: '_mm256_zextsi128_si256' was not declared in this scope
return _mm256_zextsi128_si256(_mm256_castsi256_si128(a));
^~
test.cpp:6:12: note: suggested alternative: '_mm256_castsi128_si256'
The suggested alternative is *dangerous*: The upper part of the ymm register is
undefined after _mm256_castsi128_si256, while it is zero after
_mm256_zextsi128_si256.
_mm256_castsi128_si256 works most of the time, but sometimes a compiler will
optimize away the undefined upper part so that it no longer zero. This can give
some nasty bugs.
[Bug fortran/51991] Wrong error message with variables named "SAVE*"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51991 --- Comment #16 from Steve Kargl --- On Fri, Jun 21, 2019 at 06:03:42PM +, dominiq at lps dot ens.fr wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51991 > > --- Comment #15 from Dominique d'Humieres --- > Compiling the test in comment 10 gives now > > pr51991_2.f90:3:7: > > 3 | save1 = something wrong > | 1 > Error: Invalid character in name at (1) Not my problem. Regression tested clean.
[Bug c++/90731] [9/10 Regression] noexcept broken for forward declarations with decltype
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90731 --- Comment #3 from Marek Polacek --- And using typedef: typedef void T() noexcept(true); T t; void t() noexcept(true);
[Bug tree-optimization/90930] Excessive memory consumption
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90930 Richard Biener changed: What|Removed |Added Known to work||10.0 --- Comment #9 from Richard Biener --- Fixed on trunk sofar, I'm going to backport this change.
[Bug tree-optimization/90930] Excessive memory consumption
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90930 --- Comment #8 from Richard Biener --- Author: rguenth Date: Fri Jun 21 18:12:58 2019 New Revision: 272560 URL: https://gcc.gnu.org/viewcvs?rev=272560&root=gcc&view=rev Log: 2019-06-21 Richard Biener PR tree-optimization/90930 * tree-ssa-reassoc.c (rewrite_expr_tree_parallel): Set visited flag on new stmts to avoid re-processing them. Modified: trunk/gcc/ChangeLog trunk/gcc/tree-ssa-reassoc.c
[Bug c++/90731] [9/10 Regression] noexcept broken for forward declarations with decltype
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90731 --- Comment #2 from Marek Polacek --- This test using using should compile in c++17: using T = void() noexcept(true); T t; void t() noexcept(true);
[Bug fortran/51991] Wrong error message with variables named "SAVE*"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51991 --- Comment #15 from Dominique d'Humieres --- Compiling the test in comment 10 gives now pr51991_2.f90:3:7: 3 | save1 = something wrong | 1 Error: Invalid character in name at (1) pr51991_2.f90:8:6: 8 | data1 = something wrong | 1 Error: Syntax error in DATA statement at (1) The first error before revision r272556 was pr51991_2.f90:3:6: 3 | save1 = something wrong | 1 Error: Syntax error in SAVE statement at (1) It seems there is a similar problem with DATA (and may be others) and the location of (1) is not set to the right place.
[Bug c++/90875] warnings about switch values outside range don't have associated option
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90875 Matthew Beliveau changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #2 from Matthew Beliveau --- Fixed.
[Bug other/44209] [meta-bug] Some warnings are not linked to diagnostics options
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44209 Bug 44209 depends on bug 90875, which changed state. Bug 90875 Summary: warnings about switch values outside range don't have associated option https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90875 What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED
[Bug c++/90875] warnings about switch values outside range don't have associated option
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90875 --- Comment #1 from Matthew Beliveau --- Author: mbelivea Date: Fri Jun 21 17:50:29 2019 New Revision: 272559 URL: https://gcc.gnu.org/viewcvs?rev=272559&root=gcc&view=rev Log: PR c++/90875 - added -Wswitch-outside-range option * doc/invoke.texi (Wswitch-outside-range): Document. * c.opt (Wswitch-outside-range): Added new option. * c-warn.c (c_do_switch_warnings): Use OPT_Wswitch-outside-range. * c-c++-common/Wswitch-outside-range-1.c: New test. * c-c++-common/Wswitch-outside-range-2.c: New test. * c-c++-common/Wswitch-outside-range-3.c: New test. * c-c++-common/Wswitch-outside-range-4.c: New test. Modified: trunk/gcc/ChangeLog trunk/gcc/c-family/ChangeLog trunk/gcc/c-family/c-warn.c trunk/gcc/c-family/c.opt trunk/gcc/doc/invoke.texi trunk/gcc/testsuite/ChangeLog
[Bug libstdc++/90920] [9 Regression] ABI incompatibility in std::rotate
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90920 --- Comment #6 from Jonathan Wakely --- Author: redi Date: Fri Jun 21 17:37:07 2019 New Revision: 272558 URL: https://gcc.gnu.org/viewcvs?rev=272558&root=gcc&view=rev Log: PR libstdc++/90920 restore previous checks for empty ranges The change in r263433 broke the contract of the __rotate functions, by no longer accepting empty ranges. That means that callers which inlined the old version of std::rotate (without checks) that end up linking to a new definition of std::__rotate (also without checks) could perform a divide by zero and crash. This restores the old contract of the __rotate overloads. Backport from mainline 2019-06-19 Jonathan Wakely PR libstdc++/90920 partially revert r263433 * include/bits/stl_algo.h (__rotate): Restore checks for empty ranges. (rotate): Remove checks. * testsuite/25_algorithms/rotate/90920.cc: New test. Added: branches/gcc-9-branch/libstdc++-v3/testsuite/25_algorithms/rotate/90920.cc Modified: branches/gcc-9-branch/libstdc++-v3/ChangeLog branches/gcc-9-branch/libstdc++-v3/include/bits/stl_algo.h
[Bug target/90912] Thread-local storage not working properly when compiling code with -fPIC and optimization on Solaris
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90912 --- Comment #6 from Andrew Pinski --- (In reply to Ondřej Surý from comment #5) > > That said, we did this and it has been already fixed in GCC via PR84010. How so? That PR is for sparc, the patches are against sparc too.
[Bug c++/78722] noexcept and function pointers
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78722 Marek Polacek changed: What|Removed |Added CC||mpolacek at gcc dot gnu.org --- Comment #1 from Marek Polacek --- This is accepted with both -std=c++14 and c++17.
[Bug c++/90960] declaring a member function with a computed typedef is confused as a data member definition
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90960 Marek Polacek changed: What|Removed |Added CC||mpolacek at gcc dot gnu.org --- Comment #1 from Marek Polacek --- The second problem is, I think, essentially a dup of 90731.
[Bug fortran/51991] Wrong error message with variables named "SAVE*"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51991 kargl at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P4 Status|NEW |RESOLVED CC||kargl at gcc dot gnu.org Resolution|--- |FIXED Assignee|unassigned at gcc dot gnu.org |kargl at gcc dot gnu.org Target Milestone|--- |10.0 --- Comment #14 from kargl at gcc dot gnu.org --- Patch from comment #9 was finally committed to trunk. I have no idea why I let it linger in bugzilla for so long. Sorry about the long delay. Thanks for the bug report.
[Bug fortran/51991] Wrong error message with variables named "SAVE*"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51991 --- Comment #13 from kargl at gcc dot gnu.org --- Author: kargl Date: Fri Jun 21 16:57:24 2019 New Revision: 272556 URL: https://gcc.gnu.org/viewcvs?rev=272556&root=gcc&view=rev Log: 2019-06-21 Steven G. Kargl PR fortran/51991 * decl.c (gfc_match_save): If SAVE was not seen, return MATCH_NO instead issuing an error message and returning MATCH_ERROR. 2019-06-21 Steven G. Kargl PR fortran/51991 gfortran.dg/pr51991.f90 Added: trunk/gcc/testsuite/gfortran.dg/pr51991.f90 Modified: trunk/gcc/fortran/ChangeLog trunk/gcc/fortran/decl.c trunk/gcc/testsuite/ChangeLog
[Bug c++/49332] [C++0x] noexcept ignored on function pointer
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49332
Marek Polacek changed:
What|Removed |Added
CC||mpolacek at gcc dot gnu.org
--- Comment #2 from Marek Polacek ---
This still compiles without errors in C++11, but in C++17:
49332.C:4:24: error: invalid conversion from ‘void (*)()’ to ‘void (*)()
noexcept’ [-fpermissive]
4 | void (*p)() noexcept = f; // { dg-error "" }
|^
||
|void (*)()
[Bug tree-optimization/90883] Generated code is worse if returned struct is unnamed
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90883 --- Comment #8 from Jeffrey A. Law --- Oh, yea, I kept looking at this from a DSE lens in which case it's the earlier store that is partially dead. But if we're storing the same value, then the latter store is totally dead and removing the latter store is a better choice. This might actually be fairly easy to implement, let me poke around a bit. WRT the padding byte and the unaligned issues. We try to keep the head of an area aligned, but it's much less important for the tail. And I even poked at things in the debugger and having DSE ignore that padding byte doesn't really help. Really the way to go is to realize the second store is redundant because it's storing the exact same values as the earlier store.
[Bug tree-optimization/90949] [9 Regression] null pointer check removed
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90949 Jeffrey A. Law changed: What|Removed |Added Summary|[9/10 Regression] null |[9 Regression] null pointer |pointer check removed |check removed --- Comment #8 from Jeffrey A. Law --- Fixed on trunk so far. I'll backport to gcc-9 after a few days. I'll also evaluate if we need this in gcc-8 as well (I suspect yes, even if the bug is currently latent there).
[Bug tree-optimization/90949] [9/10 Regression] null pointer check removed
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90949 --- Comment #7 from Jeffrey A. Law --- Author: law Date: Fri Jun 21 16:36:00 2019 New Revision: 272555 URL: https://gcc.gnu.org/viewcvs?rev=272555&root=gcc&view=rev Log: PR tree-optimization/90949 * tree-ssa-copy.c (fini_copy_prop): Use reset_flow_sensitive_info. * tree-ssanames.c (reset_flow_sensitive_info): Reset non-null state. * gcc.c-torture/execute/pr90949.c: New test. Added: trunk/gcc/testsuite/gcc.c-torture/execute/pr90949.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-copy.c trunk/gcc/tree-ssanames.c
[Bug c++/90960] New: declaring a member function with a computed typedef is confused as a data member definition
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90960
Bug ID: 90960
Summary: declaring a member function with a computed typedef is
confused as a data member definition
Product: gcc
Version: 9.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: alisdairm at me dot com
Target Milestone: ---
Note that this bug is a real corner case unlikely to occur in production code,
but bit us in experimental coding. In fact, there are two bugs lurking in this
report (single test case), but it feels too obscure to tie up two issues!
The following program should compile equivalently, regardless of the definition
of the SHOW_BUG macro:
#include
#define SHOW_ERROR 1
using namespace std;
template
struct why_me {
#if defined(SHOW_ERROR)
using what_the = conditional_t, void() noexcept, void()>;
#else
using what_the = void() noexcept(is_const_v);
#endif
what_the heck;
};
template
void why_me::heck() noexcept(is_const_v) {}
int main() {
why_me x = {};
x.heck();
why_me y = {};
y.heck();
}
However, when SHOW_ERROR is defined, we get the following errors:
to_heck_with_it.cpp:20:6: error: no declaration matches 'void
why_me::heck()'
20 | void why_me::heck() noexcept(is_const_v) {}
| ^
to_heck_with_it.cpp:16:13: note: candidate is: 'why_me::what_the
why_me::heck'
16 |what_the heck;
| ^~~~
to_heck_with_it.cpp:8:8: note: 'struct why_me' defined here
8 | struct why_me {
|^~
to_heck_with_it.cpp: In instantiation of 'struct why_me':
to_heck_with_it.cpp:23:16: required from here
to_heck_with_it.cpp:16:13: error: field 'why_me::heck' invalidly declared
function type
16 |what_the heck;
| ^~~~
It is not clear why the last error claims a function type is invalid here (I
believe it should be).
However, there is a second bug lurking when we do not define SHOW_ERROR (the
program compiles cleanly on other compilers):
to_heck_with_it.cpp:20:6: error: declaration of 'void why_me::heck()
noexcept (is_const_v)' has a different exception specifier
20 | void why_me::heck() noexcept(is_const_v) {}
| ^
to_heck_with_it.cpp:16:13: note: from previous declaration 'void
why_me::heck()'
16 |what_the heck;
| ^~~~
Here, the exception specifications are clearly the same, as they are even
spelled the same, so the error is just wrong.
[Bug target/90912] Thread-local storage not working properly when compiling code with -fPIC and optimization on Solaris
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90912 --- Comment #5 from Ondřej Surý --- (In reply to Andrew Pinski from comment #4) > Well GCC is producing correct code is GNU LD works with it. No, not really. > Report this bug to Sun^wOracle instead. That said, we did this and it has been already fixed in GCC via PR84010.
[Bug middle-end/90959] New: hash_map can be copied but leads to a double-free after assignment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90959
Bug ID: 90959
Summary: hash_map can be copied but leads to a double-free
after assignment
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
While beefing up the tests for bug 90923 I came across yet another bug in
hash_map. The container defines a copy ctor but no assignment operator, and so
while copying a container of PODs seems to do the right thing, assigning one to
another makes them share storage and ultimately leads to a double free. Below
is a simple test case that demonstrates this:
{
typedef hash_map Map;
{
Map m1;
void *p = &p;
m1.put (p, 1);
Map m2;
m2 = m1;
}
Map m3;
}
double free or corruption (!prev)
cc1: internal compiler error: Aborted
0x11a4b99 crash_signal
/src/gcc/git-svn/gcc/toplev.c:326
0x21447f9 xcallocator, int>
>::hash_entry>::data_free(hash_map, int> >::hash_entry*)
/src/gcc/git-svn/gcc/hash-table.h:282
0x21439ab hash_table, int> >::hash_entry, false,
xcallocator>::~hash_table()
/src/gcc/git-svn/gcc/hash-table.h:677
0x2143421 hash_map, int> >::~hash_map()
/src/gcc/git-svn/gcc/hash-map.h:30
0x2140e18 test_map_of_type_with_ctor_and_dtor
/src/gcc/git-svn/gcc/hash-map-tests.c:152
0x2141e3d selftest::hash_map_tests_c_tests()
/src/gcc/git-svn/gcc/hash-map-tests.c:257
0x20da1c5 selftest::run_tests()
/src/gcc/git-svn/gcc/selftest-run-tests.c:64
0x11a89ec toplev::run_self_tests()
/src/gcc/git-svn/gcc/toplev.c:2273
[Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797 --- Comment #81 from Jonathan Wakely --- Basically we think there's a bug in the APFS filesystem, nobody can reproduce it on other systems, none of us have access to such a system. It would be really helpful if somebody seeing the error could investigate and tell us more than "it still fails for me".
[Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797 --- Comment #80 from Jonathan Wakely --- And the headers in $target/libstdc++-v3/include/bits are now regular files, not symlinks?
[Bug ada/90958] New: Recent versions of GCC raise CONSTRAINT_ERROR at runtime for iterator loops with nested constrained records.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90958 Bug ID: 90958 Summary: Recent versions of GCC raise CONSTRAINT_ERROR at runtime for iterator loops with nested constrained records. Product: gcc Version: 9.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: ada Assignee: unassigned at gcc dot gnu.org Reporter: lburke at labprogramming dot net Target Milestone: --- Here is source code that shows the problem: procedure GNAT.IO.T is type Variant (Has : Boolean := False) is record case Has is when True => I : Integer; when False => F : Float; end case; end record; type VArray is array (Positive range <>) of Variant; type VRec (Size : Natural) is record Arr : VArray (1 .. Size); end record; type VRec2 (Size : Natural) is record Underlying : VRec (Size); end record; procedure Test (Input : in out VRec2) is begin for X of Input.Underlying.Arr loop if X.Has then X.I := X.I + 1; end if; end loop; end Test; Data : VArray (1 .. 3) := ( 1 => (Has => True, I => 10), 2 => (Has => False, F => 10.0), 3 => (Has => True, I => 20)); Rec : VRec := (Size => 3, Arr => Data); Rec2 : VRec2 := (Size => 3, Underlying => Rec); begin Test (Rec2); Put_Line (Rec2.Underlying.Arr (3).I'Img); end GNAT.IO.T; Result (from compilation to run): [ ~/test/ada/fresh ] louis@Wolvog $ gcc -v -save-temps -c test.adb Using built-in specs. COLLECT_GCC=gcc Target: x86_64-pc-linux-gnu Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib --disable-werror --enable-checking=release --enable-default-pie --enable-default-ssp --enable-cet=auto Thread model: posix gcc version 9.1.0 (GCC) COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-mtune=generic' '-march=x86-64' /usr/lib/gcc/x86_64-pc-linux-gnu/9.1.0/gnat1 -quiet -dumpbase test.adb -auxbase test -mtune=generic -march=x86-64 test.adb -o test.s test.adb:1:18: warning: file name does not match unit name, should be "g-io-t.adb" COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-mtune=generic' '-march=x86-64' as -v --64 -o test.o test.s GNU assembler version 2.32 (x86_64-pc-linux-gnu) using BFD version (GNU Binutils) 2.32 COMPILER_PATH=/usr/lib/gcc/x86_64-pc-linux-gnu/9.1.0/:/usr/lib/gcc/x86_64-pc-linux-gnu/9.1.0/:/usr/lib/gcc/x86_64-pc-linux-gnu/:/usr/lib/gcc/x86_64-pc-linux-gnu/9.1.0/:/usr/lib/gcc/x86_64-pc-linux-gnu/ LIBRARY_PATH=/usr/lib/gcc/x86_64-pc-linux-gnu/9.1.0/:/usr/lib/gcc/x86_64-pc-linux-gnu/9.1.0/../../../../lib/:/lib/../lib/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-pc-linux-gnu/9.1.0/../../../:/lib/:/usr/lib/ COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-mtune=generic' '-march=x86-64' [ ~/test/ada/fresh ] louis@Wolvog $ ls test.adb test.ali test.o test.s [ ~/test/ada/fresh ] louis@Wolvog $ gnatbind -v -x test.ali gnatbind -v -x test.ali GNATBIND 9.1.0 Copyright (C) 1995-2019, Free Software Foundation, Inc. Binding: test.ali No errors [ ~/test/ada/fresh ] louis@Wolvog $ gnatlink -v test.ali -o test GNATLINK 9.1.0 Copyright (C) 1995-2019, Free Software Foundation, Inc. gnatlink: warning: executable name "test" may conflict with shell command gcc -c -mtune=generic -march=x86-64 -gnatA -gnatWb -gnatiw -gnatws /home/louis/test/ada/fresh/b~test.adb /usr/bin/gcc b~test.o ./test.o -o test -L./ -L/usr/lib/gcc/x86_64-pc-linux-gnu/9.1.0/adalib/ /usr/lib/gcc/x86_64-pc-linux-gnu/9.1.0/adalib/libgnat.a -ldl -static-libgcc [ ~/test/ada/fresh ] louis@Wolvog $ ./test raised CONSTRAINT_ERROR : test.adb:24 discriminant check failed Here is code that should be functionally similar, but doesn't raise the error: procedure GNAT.IO.T is type Variant (Has : Boolean := False) is record case Has is when True => I : Integer; when False => F : Float; end case; end record; type VArray is array (Positive range <>) of Variant; type VRec (Size : Natural) is record Arr : VArray (1 .. Size); end record; type VRec2 (Size : Natural) is record Underlying : VRec (Size); end record; procedure Test (Input : in out VRec2) is begin for I in Input.Underlying.Arr'Range loop declare X : Variant renames Input.Underlying.Arr (I); begin if X.Has then X.I := X.I + 1;
[Bug c++/90953] [10 Regression] ICE: tree check: expected identifier_node, have tree_list in is_attribute_p, at attribs.h:155 since r272486
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90953 Marek Polacek changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #4 from Marek Polacek --- Fixed.
[Bug c++/90953] [10 Regression] ICE: tree check: expected identifier_node, have tree_list in is_attribute_p, at attribs.h:155 since r272486
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90953 --- Comment #3 from Marek Polacek --- Author: mpolacek Date: Fri Jun 21 14:41:22 2019 New Revision: 272552 URL: https://gcc.gnu.org/viewcvs?rev=272552&root=gcc&view=rev Log: PR c++/90953 - ICE with -Wmissing-format-attribute. * c-common.c (check_function_arguments_recurse): Use get_attribute_name. (check_missing_format_attribute): Likewise. * g++.dg/warn/miss-format-7.C: New test. Added: trunk/gcc/testsuite/g++.dg/warn/miss-format-7.C Modified: trunk/gcc/c-family/ChangeLog trunk/gcc/c-family/c-common.c trunk/gcc/testsuite/ChangeLog
[Bug lto/90957] 453.povray is miscompiled with -flto -static
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90957 Richard Biener changed: What|Removed |Added Keywords||lto, wrong-code --- Comment #1 from Richard Biener --- It might in the end be a linker issue - did you try with both gold and bfd? Did you try with the linker plugin?
[Bug tree-optimization/90930] Excessive memory consumption
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90930 Richard Biener changed: What|Removed |Added URL||https://gcc.gnu.org/ml/gcc- ||patches/2019-06/msg01316.ht ||ml --- Comment #7 from Richard Biener --- Patch posted.
[Bug lto/90957] New: 453.povray is miscompiled with -flto -static
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90957 Bug ID: 90957 Summary: 453.povray is miscompiled with -flto -static Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto Assignee: unassigned at gcc dot gnu.org Reporter: mkuvyrkov at gcc dot gnu.org CC: marxin at gcc dot gnu.org Target Milestone: --- Created attachment 46509 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46509&action=edit Script to reproduce 453.povray is miscompiled with -static -flto on arm-linux-gnueabihf. The failure confirmed vs trunk and gcc-8-branch, didn't check other releases. Failure seems to occur only when both -static -flto are used together; -Ox flags don't affect the outcome. I've reduce the problem to a single object povms.o. The failure occurs when povms.o is compiled with "-flto -static" and the rest of benchmark is compiled with "-static". Compiling povms.o with "-static" makes the failure go away. Attached is a script to reproduce: it uses Arm's pre-built cross-toolchain as base install and replaces compiler with a freshly built one. You need to supply your own sources of 453.povray and an aarch32 machine. Tested on armv7, but armv8 should do as well. # Produce good binary ./povray-build.sh true # Produce bad binary ./povray-build.sh false
[Bug tree-optimization/90930] Excessive memory consumption
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90930
Richard Biener changed:
What|Removed |Added
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
--- Comment #6 from Richard Biener ---
OK, so this is
UA_StatusCode ua_namespace0(UA_Server *server) {
UA_StatusCode retVal = 0x00;
UA_UInt16 ns[1];
ns[0] = UA_Server_addNamespace(server, "http://opcfoundation.org/UA/";);
retVal |= function_ua_namespace0_0_begin(server, ns);
retVal |= function_ua_namespace0_1_begin(server, ns);
retVal |= function_ua_namespace0_2_begin(server, ns);
retVal |= function_ua_namespace0_3_begin(server, ns);
...
retVal |= function_ua_namespace0_3832_begin(server, ns);
retVal |= function_ua_namespace0_3833_begin(server, ns);
retVal |= function_ua_namespace0_3834_begin(server, ns);
retVal |= function_ua_namespace0_3834_finish(server, ns);
retVal |= function_ua_namespace0_3833_finish(server, ns);
retVal |= function_ua_namespace0_3832_finish(server, ns);
retVal |= function_ua_namespace0_3831_finish(server, ns);
...
retVal |= function_ua_namespace0_3_finish(server, ns);
retVal |= function_ua_namespace0_2_finish(server, ns);
retVal |= function_ua_namespace0_1_finish(server, ns);
retVal |= function_ua_namespace0_0_finish(server, ns);
return retVal;
}
And on aarch64 before reassoc we have
_69005 = _80495 | _80496;
_26564 = MEM[(UA_UInt16 *)&ns];
_22992 = function_ua_namespace0_7_finish.isra.0 (server_3(D), _26564);
_26565 = MEM[(UA_UInt16 *)&ns];
_22995 = function_ua_namespace0_6_finish.isra.0 (server_3(D), _26565);
_69006 = _22995 | _22992;
_57512 = _69005 | _69006;
thus non-left-associative |s which we first linearize and then
re-write into two-assoc-width. The latter process is what leaves
stmts not marked as visited and thus we re-process things over and over...
reproducible on x86 with --param tree-reassoc-width=2.
tree reassociation : 23.01 ( 55%) 8.65 ( 57%) 31.25 ( 55%)
444709 kB ( 64%)
and with the fix:
tree reassociation : 0.04 ( 1%) 0.02 ( 8%) 0.06 ( 1%)
949 kB ( 7%)
[Bug debug/90914] [9 Regression] ICE in schedule_generic_params_dies_gen, at dwarf2out.c:27153
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90914 Richard Biener changed: What|Removed |Added Known to work|9.1.0 |10.0 Summary|[9/10 Regression] ICE in|[9 Regression] ICE in |schedule_generic_params_die |schedule_generic_params_die |s_gen, at dwarf2out.c:27153 |s_gen, at dwarf2out.c:27153 Known to fail|10.0|9.1.0 --- Comment #5 from Richard Biener --- Fixed on trunk sofar.
[Bug debug/90914] [9 Regression] ICE in schedule_generic_params_dies_gen, at dwarf2out.c:27153
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90914 --- Comment #6 from Richard Biener --- Author: rguenth Date: Fri Jun 21 13:56:54 2019 New Revision: 272547 URL: https://gcc.gnu.org/viewcvs?rev=272547&root=gcc&view=rev Log: 2019-06-21 Richard Biener PR debug/90914 * dwarf2out.c (prune_unused_types_walk): Always consider function-local extern declarations as used. * g++.dg/debug/pr90914.C: New testcase. Added: trunk/gcc/testsuite/g++.dg/debug/pr90914.C Modified: trunk/gcc/ChangeLog trunk/gcc/dwarf2out.c trunk/gcc/testsuite/ChangeLog
[Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797 --- Comment #79 from Damien Merenne --- not -j1. Only the LN_S trick.
[Bug c/90956] New: Failed on the PRINT
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90956 Bug ID: 90956 Summary: Failed on the PRINT Product: gcc Version: 5.4.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: oferco at inter dot net.il Target Milestone: --- Created attachment 46508 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46508&action=edit Code Arduino: 1.8.9 (Windows 8.1), Board: "Arduino Nano, ATmega328P" C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\ToshibaPc\Documents\Arduino\libraries -fqbn=arduino:avr:nano:cpu=atmega328 -vid-pid=1A86_7523 -ide-version=10809 -build-path C:\Users\TOSHIB~1\AppData\Local\Temp\arduino_build_826290 -warnings=all -build-cache C:\Users\TOSHIB~1\AppData\Local\Temp\arduino_cache_410673 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc-5.4.0-atmel3.6.1-arduino2.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude-6.3.0-arduino14.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA-1.2.1.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Users\ToshibaPc\Documents\Irrigator\SW\Orchard\RemoteUnit\RemoteUnit.ino C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\ToshibaPc\Documents\Arduino\libraries -fqbn=arduino:avr:nano:cpu=atmega328 -vid-pid=1A86_7523 -ide-version=10809 -build-path C:\Users\TOSHIB~1\AppData\Local\Temp\arduino_build_826290 -warnings=all -build-cache C:\Users\TOSHIB~1\AppData\Local\Temp\arduino_cache_410673 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc-5.4.0-atmel3.6.1-arduino2.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude-6.3.0-arduino14.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA-1.2.1.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Users\ToshibaPc\Documents\Irrigator\SW\Orchard\RemoteUnit\RemoteUnit.ino Using board 'nano' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr Using core 'arduino' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr Detecting libraries used... "C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=1600L -DARDUINO=10809 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\eightanaloginputs" "C:\\Users\\TOSHIB~1\\AppData\\Local\\Temp\\arduino_build_826290\\sketch\\RemoteUnit.ino.cpp" -o nul "C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=1600L -DARDUINO=10809 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\eightanaloginputs" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\libraries\\SPI\\src" "C:\\Users\\TOSHIB~1\\AppData\\Local\\Temp\\arduino_build_826290\\sketch\\RemoteUnit.ino.cpp" -o nul "C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=1600L -DARDUINO=10809 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\a
[Bug c++/90953] [10 Regression] ICE: tree check: expected identifier_node, have tree_list in is_attribute_p, at attribs.h:155 since r272486
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90953
--- Comment #2 from Marek Polacek ---
--- a/gcc/c-family/c-common.c
+++ b/gcc/c-family/c-common.c
@@ -7601,13 +7601,13 @@ check_missing_format_attribute (tree ltype, tree rtype)
tree ra;
for (ra = TYPE_ATTRIBUTES (ttr); ra; ra = TREE_CHAIN (ra))
-if (is_attribute_p ("format", TREE_PURPOSE (ra)))
+if (is_attribute_p ("format", get_attribute_name (ra)))
break;
if (ra)
{
tree la;
for (la = TYPE_ATTRIBUTES (ttl); la; la = TREE_CHAIN (la))
- if (is_attribute_p ("format", TREE_PURPOSE (la)))
+ if (is_attribute_p ("format", get_attribute_name (la)))
break;
return !la;
}
[Bug c++/90953] [10 Regression] ICE: tree check: expected identifier_node, have tree_list in is_attribute_p, at attribs.h:155 since r272486
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90953
--- Comment #1 from Martin Liška ---
Test-case:
$ cat jit.ii
namespace std {
union [[gnu::may_alias]] _Any_data{};
enum _Manager_operation { __get_type_info };
template class A;
class B {
typedef bool (*_Manager_type)(_Any_data, const _Any_data &,
_Manager_operation);
_Any_data _M_functor;
_Manager_type _M_manager;
};
template
class A<_Res(_ArgTypes...)> : B {
const type_info &target_type() const noexcept;
};
template
const type_info &A<_Res(_ArgTypes...)>::target_type() const noexcept {
_Any_data __typeinfo_result;
_M_manager(__typeinfo_result, _M_functor, __get_type_info);
}
} // namespace std
[Bug c++/90953] [10 Regression] ICE: tree check: expected identifier_node, have tree_list in is_attribute_p, at attribs.h:155 since r272486
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90953 Marek Polacek changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
[Bug c++/90955] Wrong optimization: erroneous sum of compile-time constants
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90955 Richard Biener changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #2 from Richard Biener --- .
[Bug debug/90914] [9/10 Regression] ICE in schedule_generic_params_dies_gen, at dwarf2out.c:27153
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90914 Richard Biener changed: What|Removed |Added Priority|P1 |P2 Target Milestone|10.0|9.2 Summary|[10 Regression] ICE in |[9/10 Regression] ICE in |schedule_generic_params_die |schedule_generic_params_die |s_gen, at dwarf2out.c:27153 |s_gen, at dwarf2out.c:27153 --- Comment #4 from Richard Biener --- Testing patch. The issue is latent in 9.1.
[Bug c++/90955] Wrong optimization: erroneous sum of compile-time constants
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90955 --- Comment #1 from Andrew Pinski --- Yes this is one of the most obvious violations of aliasing rules. Note the strict alias warnings in recent versions been removed as they providing too many false positives. Use either -fno-strict-aliasing or have an array of uint16_t and do memcpy instead.
[Bug c++/87820] Explicit user-defined casting inside a template class working in implicit conversion inside function template
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87820 --- Comment #1 from ExtComm.CODA at dlr dot de --- clang and intel-compiler don't fail
[Bug c++/55101] Invalid implicit conversion in initialization when source type is a template argument type
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55101 --- Comment #1 from ExtComm.CODA at dlr dot de --- g++ (GCC) 7.3.0: fails too
[Bug debug/90914] [10 Regression] ICE in schedule_generic_params_dies_gen, at dwarf2out.c:27153
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90914 --- Comment #3 from Richard Biener --- Similar to unused type pruning we have to preserve externs local to functions since they'll be regenerated otherwise. Index: gcc/dwarf2out.c === --- gcc/dwarf2out.c (revision 272545) +++ gcc/dwarf2out.c (working copy) @@ -29418,6 +29418,10 @@ prune_unused_types_walk (dw_die_ref die) if (die->die_perennial_p) break; + for (c = die->die_parent; c; c = c->die_parent) + if (c->die_tag == DW_TAG_subprogram) + break; + /* premark_used_variables marks external variables --- don't mark them here. */ if (get_AT (die, DW_AT_external))
[Bug c++/90955] New: Wrong optimization: erroneous sum of compile-time constants
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90955
Bug ID: 90955
Summary: Wrong optimization: erroneous sum of compile-time
constants
Product: gcc
Version: 9.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: lists at xandea dot de
Target Milestone: ---
Created attachment 46507
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46507&action=edit
minimum working example, preprocessed
Optimisation removes accumulated constant members of a struct and replaces them
with a compile-time calculated constant. However, this constant is wrong and
the functions computes a wrong result.
The error disappears when compiling without optimisation (-O0), or accessing
the struct (e.g. ::printf("%p\n", start); ) in the function, or using
std::memcpy to temporary buffer instead of reinterpret_cast. This could be a
strict-aliasing issue, but no warning is generated.
The preprocessed code is the same for GCC 6.3.0 (from Debian) and 9.1.0 (built
locally).
Originally, this issue appeared in IPv4 pseudo header calculation related to
the UDP checksum, but I removed the unneeded struct members and operations.
user@host:/tmp$ /run/shm/prefix-gcc-9.1/bin/g++ -v -save-temps -std=c++14 -g
-O3 -Wall -pedantic -Wextra -Wstrict-aliasing bug.cpp -o bug
Using built-in specs.
COLLECT_GCC=/run/shm/prefix-gcc-9.1/bin/g++
COLLECT_LTO_WRAPPER=/dev/shm/prefix-gcc-9.1/bin/../libexec/gcc/x86_64-pc-linux-gnu/9.1.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-9.1.0/configure --enable-languages=c,c++
--disable-multilib --prefix=/run/shm/prefix-gcc-9.1
Thread model: posix
gcc version 9.1.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++14' '-g' '-O3' '-Wall'
'-Wpedantic' '-Wextra' '-Wstrict-aliasing' '-o' 'bug' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/dev/shm/prefix-gcc-9.1/bin/../libexec/gcc/x86_64-pc-linux-gnu/9.1.0/cc1plus
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GNU C++14 (GCC) version 9.1.0 (x86_64-pc-linux-gnu)
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Compiler executable che
[Bug middle-end/24639] [meta-bug] bug to track all Wuninitialized issues
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639 Bug 24639 depends on bug 89296, which changed state. Bug 89296 Summary: [7 Regression] tree copy-header masking uninitialized warning https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89296 What|Removed |Added Status|RESOLVED|ASSIGNED Resolution|FIXED |---
[Bug tree-optimization/89296] [7 Regression] tree copy-header masking uninitialized warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89296 Richard Biener changed: What|Removed |Added Status|RESOLVED|ASSIGNED Resolution|FIXED |--- --- Comment #7 from Richard Biener --- I was going to backport to the 7 branch.
[Bug tree-optimization/90883] Generated code is worse if returned struct is unnamed
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90883
--- Comment #7 from rguenther at suse dot de ---
On Tue, 18 Jun 2019, law at redhat dot com wrote:
> slow ()
> {
> struct C D.25898;
> struct C D.29462;
>
> ;; basic block 2, loop depth 0, count 1073741824 (estimated locally), maybe
> hot
> ;;prev block 0, next block 1, flags: (NEW, REACHABLE, VISITED)
> ;;pred: ENTRY [always] count:1073741824 (estimated locally)
> (FALLTHRU,EXECUTABLE)
> D.25898.a = {};
> D.29462 = D.25898;
> D.25898 ={v} {CLOBBER};
> return D.29462;
> ;;succ: EXIT [always] count:1073741824 (estimated locally)
>
> }
>
> WHich still isn't sufficient to get good code.
>
> I'm not really sure what you want DSE to do here Richi :-)
I observed that
D.26322 = {};
D.26322.a = {};
looks like that the later store is dead (a C testcase showing actual
layout might be nice here). Of course DSE doesn't work this way
around but trimming might be able to trim the second store instead of
the first (to nothing)? I also noticed that
MEM[(struct C *)&D.26322 + 7B] = {};
D.26322.a = {};
here the first store is at offset 7 which will result in unaligned
and or small stores. DSE doesn't seem to exploit the fact that
we do not need to preserve the stores into the padding (in fact
we do not expand that way I think).
Given that -fno-tree-dse produces nearly optimal code
(well, RTL manages to clean up all the useless stuff) some of
the above might help.
[Bug middle-end/88784] Middle end is missing some optimizations about unsigned
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88784 --- Comment #28 from rguenther at suse dot de --- On Tue, 18 Jun 2019, helijia at gcc dot gnu.org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88784 > > --- Comment #27 from Li Jia He --- > Created attachment 46495 > --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46495&action=edit > [v2] try to fix this issue in ifcombine(and_comparisons_1 and > or_comparisons_1) > > This patch is similar to the previous patch, try to fix this issue in > ifcombine(and_comparisons_1 and or_comparisons_1). Would you like to help me > see what kind of question this patch might have again ? It looks reasonable from a quick look. Please post patches to gcc-patc...@gcc.gnu.org though.
[Bug tree-optimization/90913] [10 Regression] ICE in maybe_gen_insn, at optabs.c:7341 since r272239
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90913 Richard Biener changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #10 from Richard Biener --- Should be fixed now.
[Bug sanitizer/90954] ICE: combining undefined behavior sanitizer with openmp
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90954 --- Comment #1 from Martin Liška --- Confirmed, it's old, starting with GCC 4.9.0 where -fsanitize=undefined was added. Can you please Jakub take a look?
[Bug middle-end/26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163 Bug 26163 depends on bug 90913, which changed state. Bug 90913 Summary: [10 Regression] ICE in maybe_gen_insn, at optabs.c:7341 since r272239 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90913 What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED
[Bug c++/90951] [8/9/10 Regression] error initializing a constexpr array of a struct with const member
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90951 Richard Biener changed: What|Removed |Added Priority|P3 |P2 Target Milestone|--- |8.4
[Bug c++/90953] [10 Regression] ICE: tree check: expected identifier_node, have tree_list in is_attribute_p, at attribs.h:155 since r272486
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90953 Richard Biener changed: What|Removed |Added Priority|P3 |P1
[Bug tree-optimization/90913] [10 Regression] ICE in maybe_gen_insn, at optabs.c:7341 since r272239
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90913 --- Comment #9 from Richard Biener --- Author: rguenth Date: Fri Jun 21 11:10:39 2019 New Revision: 272545 URL: https://gcc.gnu.org/viewcvs?rev=272545&root=gcc&view=rev Log: 2019-06-21 Richard Biener PR tree-optimization/90913 * tree-vect-loop-manip.c (vect_loop_versioning): Do not re-use the scalar variant of if-conversion versioning. * gfortran.dg/vect/pr90913.f90: New testcase. Added: trunk/gcc/testsuite/gfortran.dg/vect/pr90913.f90 Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-vect-loop-manip.c
[Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797 --- Comment #78 from Jonathan Wakely --- And is that using LN_S="cp -pR" ? And -j1 ?
