http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47381
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2011-01-20 18:59:10 UTC --- Another crash [hjl@gnu-6 ilp32-13]$ cat x.i struct foo_t { int limit; } foo[3]; void bar () { int i; for (i = 0; i < 3; i++) { __builtin_memset (&foo[i], 0, sizeof(*foo)); } } [hjl@gnu-6 ilp32-13]$ /export/build/gnu/gcc-x32/build-x86_64-linux/gcc/xgcc -B/export/build/gnu/gcc-x32/build-x86_64-linux/gcc/ -S -o x.s -mx32 -O2 -dp -march=atom x.i x.i: In function ‘bar’: x.i:10:1: internal compiler error: in gen_lowpart_general, at rtlhooks.c:59 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. [hjl@gnu-6 ilp32-13]$