>Number: 6139 >Category: optimization >Synopsis: C++ && -O3 && (quicksort.cc of Mesa/glu) == ICE (-O2 is fine) >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: ice-on-legal-code >Submitter-Id: net >Arrival-Date: Tue Apr 02 15:46:02 PST 2002 >Closed-Date: >Last-Modified: >Originator: Ole André Vadla Ravnås >Release: 3.1 20020325 (prerelease) >Organization: >Environment: System: Linux zole.jblinux.net 2.4.18 #1 Wed Mar 27 22:38:35 EST 2002 i686 unknown Architecture: i686 host: i686-jb-linux-gnu build: i686-jb-linux-gnu target: i686-jb-linux-gnu configured with: ../configure --prefix=/usr --infodir=/usr/share/info --mandir=/usr/share/man --enable-shared --enable-threads=posix --enable-languages=c,c++,f77,gcov,java,objc,ksi --enable-long-long --enable-multilib --with-gnu-as --with-gnu-ld --with-system-zlib --with-slibdir=/lib --without-x i686-jb-linux >Description: Compiling quicksort.cc which resides in glu/libnurbs/nurbtess/ of the MesaLib / MesaDemos distribution, with -O3, yields an ICE. -O2, however, works just fine. The gcc commandline is: g++ -DHAVE_CONFIG_H -I. -I. -I../../.. -I../../include -I../../../include -O3 -march=i686 -mcpu=i686 -Wp,-MD,.deps/quicksort.pp -c quicksort.cc -fPIC -DPIC -o quicksort.o Including or excluding the march and mcpu options yield absolutely no difference. >How-To-Repeat: See attachment. Compile it with: g++ -O3 -march=i686 -mcpu=i686 -c quicksort.ii -fPIC -DPIC -o quicksort.o >Fix: Only a workaround; compile with -O2 instead of -O3. >Release-Note: >Audit-Trail: >Unformatted: ----gnatsweb-attachment---- Content-Type: application/x-bzip2; name="quicksort.ii.bz2" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="quicksort.ii.bz2" QlpoOTFBWSZTWSCjW00AD+j/gH8Y////////v+//Lr////pgJ154AAX28dbwnp6WMdDIUKc128PD pbYe557wO2S1u3ummuwAW29t5aZxNRVL3pcgjs9zpVcC1keiYxLpoAAsyrGWx1y5dsc2wA93CuTZ vd3EzsJEgjTRMgSeinhQahk9J6TamgGT0mmgAA0AaABoAaZAiaSmKeiNNAyA0AAAAaAAAAAAABxo aNGg0aBoAAAAAGQAAABoDIADBJpIkRoQNU8SntCj9KeU80oPU9Q9AyGp6gAAB4poNNqaZDQIlJqa CnkT2oJiJtG0miDRgmZGmo0aZDTQ00GgAbSeU8SBEiIIBBGmhMmUxTyJ6jQAGIAAGgAAAAF8A1kg AQUjIoRYqEUCADIMIQgrCBFIiIh6+2hIf8Q60UFAFRkFkkWWJUWAKExJkQlYDlkWSIuURMSEoZSA pHD1GVDaoVLrGzAUGjURGIqCIwUZFGKiMURIoqpPhpYosFgiuMjxZk2Pv2UFUUWpVQShA/KczU2J SQA+BMRZwxRdTGLiVl5tAxUWAoWpVFiIFWrVECIpVssRaWVCpXj8X0/8ZPpQfx8QnUHUiKw7vVTB 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