Package: gcc-4.6 Version: 4.6.0-7 Severity: normal Hello Debian GCC Maintainers,
gcc 4.6 on Debian/amd64 miscompiles PARI/GP SVN revision 12000: Step to reproduce: wget 'http://pari.math.u-bordeaux.fr/~bill/pari-2.4.3.12000.tar.gz' tar xf pari-2.4.3.12000.tar.gz cd pari-2.4.3.alpha ./Configure make gp make bench Result: all test suite fail. Cause: The function pari_init_parser() in the file src/language/parsec.h is miscompiled. (This file is included by src/language/parse.y). If you replace the line 43: s_node.n=OPnboperator; by parsestate_reset(); (which does the same thing), then all test pass. It seems that the issue is that the function stack_alloc() is not inlined correctly, which cause pari_tree to be NULL (or maybe the call to pari_inline inside stack_alloc() is not inlined correctly. The command line used is gcc-4.6 -c -O3 -Wall -fno-strict-aliasing -fomit-frame-pointer -I. -I../src/headers -fPIC -o parse.o ../src/language/parse.c It also happens with -O2, but not with -O3 -fno-inline. It works fine with gcc 4.3, 4.4 and 4.5. Cheers, -- Bill. <ballo...@debian.org> Imagine a large red swirl here. -- To UNSUBSCRIBE, email to debian-gcc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20110517150530.GA2420@yellowpig
