public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug c++/55405] New: ICE with optimization @ 2012-11-20 0:15 cas43 at cs dot stanford.edu 2012-11-20 0:23 ` [Bug c++/55405] " paolo.carlini at oracle dot com ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: cas43 at cs dot stanford.edu @ 2012-11-20 0:15 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55405 Bug #: 55405 Summary: ICE with optimization Classification: Unclassified Product: gcc Version: 4.6.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned@gcc.gnu.org ReportedBy: cas43@cs.stanford.edu How to compile: g++ prog.cpp -O3 -c Result: prog.cpp: In function ‘void foo()’: prog.cpp:22:1: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <file:///usr/share/doc/gcc-4.6/README.Bugs> for instructions. Preprocessed source stored into /tmp/ccLwjBSn.out file, please attach this to your bugreport. Code: template<class T> struct A { A(){} ~A(){} T a[1]; void f(int i); }; struct B { virtual ~B(); }; void bar(); void foo() { B b; A<A<int> > x; for(int i=0;i<4;i++) x.f(0); A<A<A<int> > > y,z; bar(); bar(); } Version: Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.6/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.3-1ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.6 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/55405] ICE with optimization 2012-11-20 0:15 [Bug c++/55405] New: ICE with optimization cas43 at cs dot stanford.edu @ 2012-11-20 0:23 ` paolo.carlini at oracle dot com 2012-11-25 11:11 ` mikpe at it dot uu.se ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: paolo.carlini at oracle dot com @ 2012-11-20 0:23 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55405 --- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-11-20 00:22:54 UTC --- Mainline and 4_7-branch are fine. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/55405] ICE with optimization 2012-11-20 0:15 [Bug c++/55405] New: ICE with optimization cas43 at cs dot stanford.edu 2012-11-20 0:23 ` [Bug c++/55405] " paolo.carlini at oracle dot com @ 2012-11-25 11:11 ` mikpe at it dot uu.se 2012-11-25 11:32 ` [Bug tree-optimization/55405] " paolo.carlini at oracle dot com 2014-12-11 12:48 ` mpolacek at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: mikpe at it dot uu.se @ 2012-11-25 11:11 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55405 Mikael Pettersson <mikpe at it dot uu.se> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mikpe at it dot uu.se --- Comment #2 from Mikael Pettersson <mikpe at it dot uu.se> 2012-11-25 11:11:35 UTC --- The ICE at -O3 was first silenced for 4.7 by r171450: http://gcc.gnu.org/ml/gcc-cvs/2011-03/msg00874.html, when Richard Biener added an FRE pass after early SRA. At that point the ICE still occurs with -O3 -fno-tree-fre. The ICE at -O3 -fno-tree-fre was then silenced for 4.7 by r181014: http://gcc.gnu.org/ml/gcc-cvs/2011-11/msg00300.html, a missed-optimization patch. The ICE before r181014 occurs because except.c:emit_to_new_bb_before is called on an insn whose BLOCK_FOR_INSN is NULL, but that NULL pointer is unconditionally dereferenced causing a SEGV. I don't see a sane way of handling that locally. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/55405] ICE with optimization 2012-11-20 0:15 [Bug c++/55405] New: ICE with optimization cas43 at cs dot stanford.edu 2012-11-20 0:23 ` [Bug c++/55405] " paolo.carlini at oracle dot com 2012-11-25 11:11 ` mikpe at it dot uu.se @ 2012-11-25 11:32 ` paolo.carlini at oracle dot com 2014-12-11 12:48 ` mpolacek at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: paolo.carlini at oracle dot com @ 2012-11-25 11:32 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55405 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|c++ |tree-optimization --- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-11-25 11:31:50 UTC --- Ok, let's change the Component to something more sensible, anyway. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/55405] ICE with optimization 2012-11-20 0:15 [Bug c++/55405] New: ICE with optimization cas43 at cs dot stanford.edu ` (2 preceding siblings ...) 2012-11-25 11:32 ` [Bug tree-optimization/55405] " paolo.carlini at oracle dot com @ 2014-12-11 12:48 ` mpolacek at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: mpolacek at gcc dot gnu.org @ 2014-12-11 12:48 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55405 Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED CC| |mpolacek at gcc dot gnu.org Resolution|--- |FIXED --- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> --- All active branches seem to be fine now. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2014-12-11 12:48 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-11-20 0:15 [Bug c++/55405] New: ICE with optimization cas43 at cs dot stanford.edu 2012-11-20 0:23 ` [Bug c++/55405] " paolo.carlini at oracle dot com 2012-11-25 11:11 ` mikpe at it dot uu.se 2012-11-25 11:32 ` [Bug tree-optimization/55405] " paolo.carlini at oracle dot com 2014-12-11 12:48 ` mpolacek at gcc dot gnu.org
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).