Bug#394311: libgl1-mesa-dri: i965_dri.so miscompiled with current gcc
found 6.5.1-0.4 tags 394311 + patch confirmed thanks I confirm that this bug still exists in mesa 6.5.1-0.4, and that the proposed patch actually fixes it. Could be good to have it in etch, IMHO. Regards, -- Jérémy signature.asc Description: Digital signature
Bug#394311: libgl1-mesa-dri: i965_dri.so miscompiled with current gcc
On Sat, Oct 21, 2006 at 06:52:06PM +0100, Ben Hutchings wrote: On Sat, 2006-10-21 at 12:08 -0400, Ryan Richter wrote: On Sat, Oct 21, 2006 at 10:18:41AM +0200, Michel Dänzer wrote: On Fri, 2006-10-20 at 12:47 -0400, [EMAIL PROTECTED] wrote: Package: libgl1-mesa-dri Version: 6.5.1-0.2 Severity: normal The current build contains a faulty i965_dri.so causing all GL clients to crash and lock up the display. This is apparently caused by a miscompilation with gcc-4.1. Rebuilding with gcc-3.4 fixes the problem. Ben, do you happen to know whether this was built with -fno-strict-aliasing? If not, that might be worth a try, as the Mesa code generally isn't strict aliasing safe. I can't find -fno-strict-aliasing anywhere in configs/debian*, so I don't think anything is built with that. I didn't modify any of the build options, so I suppose I can't have used -fno-strict-aliasing. Unfortunately pbuilder doesn't log (or I have not configured it to, if that's possible). You had better try that because I don't have any machine with an i965 to test on. Yep, adding -fno-strict-aliasing makes it work with gcc-4.1. patch diff -Naur mesa-6.5.1/configs/debian mesa-6.5.1-fnsa/configs/debian --- mesa-6.5.1/configs/debian 2006-10-23 13:44:20.0 -0400 +++ mesa-6.5.1-fnsa/configs/debian 2006-10-23 13:45:14.583335930 -0400 @@ -7,9 +7,9 @@ DEBIAN_COMMON_CPPFLAGS = -D_POSIX_SOURCE -D_POSIX_C_SOURCE=199309L -D_SVID_SOURCE -D_BSD_SOURCE -D_GNU_SOURCE -DUSE_XSHM -DPTHREADS `pkg-config --cflags x11 xext` -DEBIAN_COMMON_CFLAGS = -std=c99 -pedantic -Wall -fPIC +DEBIAN_COMMON_CFLAGS = -std=c99 -pedantic -Wall -fPIC -fno-strict-aliasing -DEBIAN_COMMON_CXXFLAGS = -ansi -pedantic -Wall -fPIC +DEBIAN_COMMON_CXXFLAGS = -ansi -pedantic -Wall -fPIC -fno-strict-aliasing DEBIAN_OPT_CFLAGS = -O2 diff -Naur mesa-6.5.1/configs/debian-static mesa-6.5.1-fnsa/configs/debian-static --- mesa-6.5.1/configs/debian-static2006-10-23 13:44:20.0 -0400 +++ mesa-6.5.1-fnsa/configs/debian-static 2006-10-23 13:45:19.624665242 -0400 @@ -7,9 +7,9 @@ DEBIAN_COMMON_CPPFLAGS = -D_POSIX_SOURCE -D_POSIX_C_SOURCE=199309L -D_SVID_SOURCE -D_BSD_SOURCE -DUSE_XSHM -DPTHREADS -I/usr/X11R6/include -DEBIAN_COMMON_CFLAGS = -std=c99 -pedantic -Wall +DEBIAN_COMMON_CFLAGS = -std=c99 -pedantic -Wall -fno-strict-aliasing -DEBIAN_COMMON_CXXFLAGS = -ansi -pedantic -Wall +DEBIAN_COMMON_CXXFLAGS = -ansi -pedantic -Wall -fno-strict-aliasing DEBIAN_OPT_CFLAGS = -O2 -ryan -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Bug#394311: libgl1-mesa-dri: i965_dri.so miscompiled with current gcc
On Sat, 2006-10-21 at 18:52 +0100, Ben Hutchings wrote: On Sat, 2006-10-21 at 12:08 -0400, Ryan Richter wrote: On Sat, Oct 21, 2006 at 10:18:41AM +0200, Michel Dänzer wrote: On Fri, 2006-10-20 at 12:47 -0400, [EMAIL PROTECTED] wrote: Package: libgl1-mesa-dri Version: 6.5.1-0.2 Severity: normal The current build contains a faulty i965_dri.so causing all GL clients to crash and lock up the display. This is apparently caused by a miscompilation with gcc-4.1. Rebuilding with gcc-3.4 fixes the problem. Ben, do you happen to know whether this was built with -fno-strict-aliasing? If not, that might be worth a try, as the Mesa code generally isn't strict aliasing safe. I can't find -fno-strict-aliasing anywhere in configs/debian*, so I don't think anything is built with that. I didn't modify any of the build options, so I suppose I can't have used -fno-strict-aliasing. Unfortunately pbuilder doesn't log (or I have not configured it to, if that's possible). There's --logfile, but I usually just do pbuilder command line 21 | tee logfile You have my sincere respect for using pbuilder in the first place though. :) You had better try that because I don't have any machine with an i965 to test on. Yes, please try it Ryan. -- Earthling Michel Dänzer | http://tungstengraphics.com Libre software enthusiast | Debian, X and DRI developer
Bug#394311: libgl1-mesa-dri: i965_dri.so miscompiled with current gcc
On Fri, 2006-10-20 at 12:47 -0400, [EMAIL PROTECTED] wrote: Package: libgl1-mesa-dri Version: 6.5.1-0.2 Severity: normal The current build contains a faulty i965_dri.so causing all GL clients to crash and lock up the display. This is apparently caused by a miscompilation with gcc-4.1. Rebuilding with gcc-3.4 fixes the problem. Ben, do you happen to know whether this was built with -fno-strict-aliasing? If not, that might be worth a try, as the Mesa code generally isn't strict aliasing safe. -- Earthling Michel Dänzer | http://tungstengraphics.com Libre software enthusiast | Debian, X and DRI developer
Bug#394311: libgl1-mesa-dri: i965_dri.so miscompiled with current gcc
On Sat, 2006-10-21 at 12:08 -0400, Ryan Richter wrote: On Sat, Oct 21, 2006 at 10:18:41AM +0200, Michel Dänzer wrote: On Fri, 2006-10-20 at 12:47 -0400, [EMAIL PROTECTED] wrote: Package: libgl1-mesa-dri Version: 6.5.1-0.2 Severity: normal The current build contains a faulty i965_dri.so causing all GL clients to crash and lock up the display. This is apparently caused by a miscompilation with gcc-4.1. Rebuilding with gcc-3.4 fixes the problem. Ben, do you happen to know whether this was built with -fno-strict-aliasing? If not, that might be worth a try, as the Mesa code generally isn't strict aliasing safe. I can't find -fno-strict-aliasing anywhere in configs/debian*, so I don't think anything is built with that. I didn't modify any of the build options, so I suppose I can't have used -fno-strict-aliasing. Unfortunately pbuilder doesn't log (or I have not configured it to, if that's possible). You had better try that because I don't have any machine with an i965 to test on. Ben. -- Ben Hutchings -- [EMAIL PROTECTED] shortened to [EMAIL PROTECTED] If you've signed my GPG key, please send a signature on and to the new uid. In a hierarchy, every employee tends to rise to his level of incompetence. signature.asc Description: This is a digitally signed message part
Bug#394311: libgl1-mesa-dri: i965_dri.so miscompiled with current gcc
Package: libgl1-mesa-dri Version: 6.5.1-0.2 Severity: normal The current build contains a faulty i965_dri.so causing all GL clients to crash and lock up the display. This is apparently caused by a miscompilation with gcc-4.1. Rebuilding with gcc-3.4 fixes the problem. -- System Information: Debian Release: testing/unstable APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Shell: /bin/sh linked to /bin/bash Kernel: Linux 2.6.19-rc2 Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968) Versions of packages libgl1-mesa-dri depends on: ii libc62.3.6.ds1-6 GNU C Library: Shared libraries ii libdrm2 2.0.2-0.1 Userspace interface to kernel DRM ii libexpat11.95.8-3.3 XML parsing C library - runtime li ii libgl1-mesa-glx 6.5.1-0.2 A free implementation of the OpenG libgl1-mesa-dri recommends no packages. -- no debconf information -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
