# GCC 4.4.0 - Thread: https://externals.io/message/43762 - Original archive: https://news-web.php.net/php.internals/43762 - Started by Sebastian Bergmann on 2009-04-24T08:29:59+00:00 - Messages: 10 - Reply by email to internals@lists.php.net - More for agents: search with https://externals.io/search.md?q={query} · JSON API at https://externals.io/api · documentation at https://externals.io/llms.txt --- ## #43762 — Sebastian Bergmann — 2009-04-24T08:29:59+00:00 URL: https://externals.io/message/43762#43762 I experimented a bit with GCC 4.4.0 recently and found out that when compiled with it and -O2, PHP_5_3 segfaults. -O0 and -O1 are fine. PHP_5_2 and GCC 4.4.0 is fine at -O2. -- Sebastian Bergmann Co-Founder and Principal Consultant http://sebastian-bergmann.de/ http://thePHP.cc/ --- ## #43763 — Scott MacVicar — 2009-04-24T08:37:54+00:00 URL: https://externals.io/message/43762#43763 · In reply to: #43762 Sebastian Bergmann wrote: > I experimented a bit with GCC 4.4.0 recently and found out that when > compiled with it and -O2, PHP_5_3 segfaults. -O0 and -O1 are fine. > > PHP_5_2 and GCC 4.4.0 is fine at -O2. > 64-bit machine? There is a known issue with 4.3.0 on 64-bit amd. Scott --- ## #43764 — Sebastian Bergmann — 2009-04-24T08:41:52+00:00 URL: https://externals.io/message/43762#43764 · In reply to: #43763 Scott MacVicar schrieb: > 64-bit machine? Nope: sb@ubuntu ~ % uname -a Linux ubuntu 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009 i686 GNU/Linux sb@ubuntu ~ % /usr/local/gcc/bin/gcc -v Using built-in specs. Target: i686-pc-linux-gnu Configured with: ../configure --prefix=/usr/local/gcc --enable-languages=c,c++ Thread model: posix gcc version 4.4.0 (GCC) -- Sebastian Bergmann Co-Founder and Principal Consultant http://sebastian-bergmann.de/ http://thePHP.cc/ --- ## #43765 — Pierre Joye — 2009-04-24T08:43:05+00:00 URL: https://externals.io/message/43762#43765 · In reply to: #43763 any bug #? > Sebastian Bergmann wrote: > > […] > > 64-bit machine? > > There is a known issue with 4.3.0 on 64-bit amd. > > Scott > > -- > > > > -- Pierre http://blog.thepimp.net | http://www.libgd.org --- ## #43766 — Scott MacVicar — 2009-04-24T09:02:28+00:00 URL: https://externals.io/message/43762#43766 · In reply to: #43764 Sebastian Bergmann wrote: > Scott MacVicar schrieb: > > […] > > Nope: > > sb@ubuntu ~ % uname -a > Linux ubuntu 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC > 2009 i686 GNU/Linux > > sb@ubuntu ~ % /usr/local/gcc/bin/gcc -v > Using built-in specs. > Target: i686-pc-linux-gnu > Configured with: ../configure --prefix=/usr/local/gcc > --enable-languages=c,c++ > Thread model: posix > gcc version 4.4.0 (GCC) > Can you set your cflags to -fno-strict-aliasing and try again. This resolved the issue with the previous report. It was bug #47730 Scott --- ## #43767 — Sebastian Bergmann — 2009-04-24T09:10:28+00:00 URL: https://externals.io/message/43762#43767 · In reply to: #43766 Scott MacVicar schrieb: > Can you set your cflags to -fno-strict-aliasing and try again. This > resolved the issue with the previous report. Adding -fno-strict-aliasing to CFLAGS works around the issue, yes. -- Sebastian Bergmann Co-Founder and Principal Consultant http://sebastian-bergmann.de/ http://thePHP.cc/ --- ## #43769 — Nuno Lopes — 2009-04-25T11:09:15+00:00 URL: https://externals.io/message/43762#43769 · In reply to: #43767 > Scott MacVicar schrieb: > > […] > > Adding -fno-strict-aliasing to CFLAGS works around the issue, yes. Wow, this is terrible news, as -fno-strict-aliasing usually degrades performance by a considerable amount. Do you where it's crashing so that I can take a look? Nuno --- ## #43770 — Sebastian Bergmann — 2009-04-25T11:17:43+00:00 URL: https://externals.io/message/43762#43770 · In reply to: #43769 Nuno Lopes schrieb: > Do you where it's crashing so that I can take a look? http://pastebin.com/m78a01116 -- Sebastian Bergmann Co-Founder and Principal Consultant http://sebastian-bergmann.de/ http://thePHP.cc/ --- ## #43772 — Nuno Lopes — 2009-04-25T17:43:42+00:00 URL: https://externals.io/message/43762#43772 · In reply to: #43770 > Nuno Lopes schrieb: > > […] > > http://pastebin.com/m78a01116 This particular problem should be fixed now. Let me know if PHP still crashes for you. Nuno --- ## #43775 — Sebastian Bergmann — 2009-04-26T07:22:04+00:00 URL: https://externals.io/message/43762#43775 · In reply to: #43772 Nuno Lopes schrieb: > This particular problem should be fixed now. Let me know if PHP still > crashes for you. It is fixed, thanks! -- Sebastian Bergmann Co-Founder and Principal Consultant http://sebastian-bergmann.de/ http://thePHP.cc/