https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65017
--- Comment #4 from rguenther at suse dot de <rguenther at suse dot de> --- On Wed, 11 Feb 2015, dcb314 at hotmail dot com wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65017 > > --- Comment #3 from David Binderman <dcb314 at hotmail dot com> --- > (In reply to Richard Biener from comment #2) > > I can't reproduce this - how did you compile/configure GCC? Just tried both > > --enable-checking and --enable-checking=release builds. > > ../src/trunk/configure --prefix=/home/dcb/gcc/results \ > --disable-bootstrap \ > --disable-werror \ > --enable-checking=yes \ > --enable-languages=c,c++,fortran \ > CC="clang -fheinous-gnu-extensions" \ > CXX="clang++ -fheinous-gnu-extensions" > > on AMD Phenom. Uh, so it might be very well clang miscompiling it. I don't have clang to reproduce, so can you get me some more information, like (gdb) p debug_tree (t) at the point it barfs? Can you disable optimization of clang? Thus build with CFLAGS="-g -O0" CXXFLAGS="-g -O0"?