public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug c++/55339] New: Generated code hangs with -O2 on Linux ppc @ 2012-11-15 11:24 anton.katilin at gmail dot com 2012-11-15 11:28 ` [Bug c++/55339] " anton.katilin at gmail dot com ` (4 more replies) 0 siblings, 5 replies; 6+ messages in thread From: anton.katilin at gmail dot com @ 2012-11-15 11:24 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55339 Bug #: 55339 Summary: Generated code hangs with -O2 on Linux ppc Classification: Unclassified Product: gcc Version: 4.7.2 Status: UNCONFIRMED Severity: critical Priority: P3 Component: c++ AssignedTo: unassigned@gcc.gnu.org ReportedBy: anton.katilin@gmail.com Please find attached a test program and _compile.sh to compile it. _compile.sh produces 2 output files: test-O2.bin and test-O1.bin, compiled with -O2 and -O1 respectively. test-O1.bin works just fine: $ ./test-O1.bin entering... exception caught, as expected OK $ test-O1.bin hangs: $ ./test-O2.bin entering... <hangs forever at this point...> $ g++ -v Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/opt/gcc-4.7.2/libexec/gcc/powerpc64-unknown-linux-gnu/4.7.2/lto-wrapper Target: powerpc64-unknown-linux-gnu Configured with: ../gcc-4.7.2/configure --prefix=/opt/gcc-4.7.2 --enable-threads=posix --disable-libunwind-exceptions --with-system-zlib --enable-__cxa_atexit --enable-languages=c,c++ --enable-multilib Thread model: posix gcc version 4.7.2 (GCC) $ uname -a Linux localhost.localdomain 2.6.29-3.ydl61.3 #1 SMP Thu Jun 25 12:22:41 EDT 2009 ppc64 ppc64 ppc64 GNU/Linux ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/55339] Generated code hangs with -O2 on Linux ppc 2012-11-15 11:24 [Bug c++/55339] New: Generated code hangs with -O2 on Linux ppc anton.katilin at gmail dot com @ 2012-11-15 11:28 ` anton.katilin at gmail dot com 2012-11-15 11:35 ` [Bug c++/55339] C++ code compiled with -O2 on Linux ppc hangs in runtime paolo.carlini at oracle dot com ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: anton.katilin at gmail dot com @ 2012-11-15 11:28 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55339 --- Comment #1 from anton.katilin at gmail dot com 2012-11-15 11:28:32 UTC --- Compile with: ------------------------------------- export PATH=/opt/gcc-4.7.2/bin:$PATH g++ -m32 -fPIC -O2 *.cpp -o test-O2.bin g++ -m32 -fPIC -O1 *.cpp -o test-O1.bin Please find the source code of the test below. ------------------------------------- Test.cpp ------------------------------------- #include <stdio.h> #include "Foo.h" int main() { try { printf("entering...\n"); fflush(stdout); YS(-1); // will throw exception printf("must never reach\n"); } catch (int) { printf("exception caught, as expected\n"); } printf("OK\n"); return 0; } ------------------------------------- Foo.h ------------------------------------- #pragma once void foo(); void checkPositive(int); class YS { public: YS(int capacity) { checkPositive(capacity); } ~YS() { foo(); } }; void throwException(const YS&); ------------------------------------- Foo.cpp ------------------------------------- #include "Foo.h" void foo() { } void checkPositive(int v) { if (v <= 0) { throwException(10); } } void throwException(const YS&) { throw int(1); } ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/55339] C++ code compiled with -O2 on Linux ppc hangs in runtime 2012-11-15 11:24 [Bug c++/55339] New: Generated code hangs with -O2 on Linux ppc anton.katilin at gmail dot com 2012-11-15 11:28 ` [Bug c++/55339] " anton.katilin at gmail dot com @ 2012-11-15 11:35 ` paolo.carlini at oracle dot com 2012-11-15 14:35 ` anton.katilin at gmail dot com ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: paolo.carlini at oracle dot com @ 2012-11-15 11:35 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55339 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|critical |normal ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/55339] C++ code compiled with -O2 on Linux ppc hangs in runtime 2012-11-15 11:24 [Bug c++/55339] New: Generated code hangs with -O2 on Linux ppc anton.katilin at gmail dot com 2012-11-15 11:28 ` [Bug c++/55339] " anton.katilin at gmail dot com 2012-11-15 11:35 ` [Bug c++/55339] C++ code compiled with -O2 on Linux ppc hangs in runtime paolo.carlini at oracle dot com @ 2012-11-15 14:35 ` anton.katilin at gmail dot com 2012-11-15 18:06 ` [Bug target/55339] " pinskia at gcc dot gnu.org 2012-11-16 17:44 ` anton.katilin at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: anton.katilin at gmail dot com @ 2012-11-15 14:35 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55339 --- Comment #2 from anton.katilin at gmail dot com 2012-11-15 14:35:12 UTC --- An update: There is no problem when linking statically, i.e. if we do g++ -m32 -fPIC -O2 *.cpp -static-libstdc++ -static-libgcc -o test-O2.bin instead of g++ -m32 -fPIC -O2 *.cpp -o test-O2.bin ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/55339] C++ code compiled with -O2 on Linux ppc hangs in runtime 2012-11-15 11:24 [Bug c++/55339] New: Generated code hangs with -O2 on Linux ppc anton.katilin at gmail dot com ` (2 preceding siblings ...) 2012-11-15 14:35 ` anton.katilin at gmail dot com @ 2012-11-15 18:06 ` pinskia at gcc dot gnu.org 2012-11-16 17:44 ` anton.katilin at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu.org @ 2012-11-15 18:06 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55339 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target| |powerpc-linux-gnu Component|c++ |target --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-11-15 18:06:08 UTC --- >--disable-libunwind-exceptions Why did you do that? Though it should not matter for PPC. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/55339] C++ code compiled with -O2 on Linux ppc hangs in runtime 2012-11-15 11:24 [Bug c++/55339] New: Generated code hangs with -O2 on Linux ppc anton.katilin at gmail dot com ` (3 preceding siblings ...) 2012-11-15 18:06 ` [Bug target/55339] " pinskia at gcc dot gnu.org @ 2012-11-16 17:44 ` anton.katilin at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: anton.katilin at gmail dot com @ 2012-11-16 17:44 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55339 --- Comment #4 from anton.katilin at gmail dot com 2012-11-16 17:44:16 UTC --- > Why did you do that? We copied the configuration of gcc 4.1.2 available on the system (Yellow Dog Linux) out of the box. It had been configured with --disable-libunwind-exceptions By the way, the problem is not reproducible with that gcc 4.1.2. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2012-11-16 17:44 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-11-15 11:24 [Bug c++/55339] New: Generated code hangs with -O2 on Linux ppc anton.katilin at gmail dot com 2012-11-15 11:28 ` [Bug c++/55339] " anton.katilin at gmail dot com 2012-11-15 11:35 ` [Bug c++/55339] C++ code compiled with -O2 on Linux ppc hangs in runtime paolo.carlini at oracle dot com 2012-11-15 14:35 ` anton.katilin at gmail dot com 2012-11-15 18:06 ` [Bug target/55339] " pinskia at gcc dot gnu.org 2012-11-16 17:44 ` anton.katilin at gmail dot com
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).