The example (attached below), when compiled by following gcc ------------------- $ gcc -v Using built-in specs. Target: i686-pc-linux-gnu Configured with: ../../../gcc-CVS-20051011/gcc-CVS-20051011/configure --host=i686-pc-linux-gnu --prefix=/usr/local/opt/gcc-4.1 --exec-prefix=/usr/local/opt/gcc-4.1 --sysconfdir=/etc --libdir=/usr/local/opt/gcc-4.1/lib --libexecdir=/usr/local/opt/gcc-4.1/libexec --sharedstatedir=/var --localstatedir=/var --program-suffix=-4.1 --with-x-includes=/usr/X11R6/include --with-x-libraries=/usr/X11R6/lib --enable-shared --enable-static --with-gnu-as --with-gnu-ld --with-stabs --enable-threads=posix --enable-version-specific-runtime-libs --disable-coverage --disable-libgcj --disable-checking --enable-multilib --with-x --enable-cmath --enable-libstdcxx-debug --enable-fast-character --enable-hash-synchronization --with-system-zlib --with-libbanshee --with-demangler-in-ld --with-arch=athlon-xp --disable-libada --enable-languages=c,c++,f95,objc Thread model: posix gcc version 4.1.0 20051010 (experimental) -------------------
with ------------------- gcc -O3 -ftree-loop-linear -c quant_lsp.c -o quant_lsp.o ------------------- results in this: ------------------- quant_lsp.c: In function âlsp_quant_48kâ: quant_lsp.c:103: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. ------------------- This fails on both i686-pc-linux-gnu and x86_64-pc-linux-gnu. It seems that the regression was introduced somewhere between CVS-20050723 (which works) and CVS-20050812 (which doesn't). -- Summary: [4.1 Regression] ICE with -O3 -ftree-loop-linear Product: gcc Version: 4.1.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: drab at kepler dot fjfi dot cvut dot cz GCC target triplet: i?86-*-*, x86_64-*-* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24309
