http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47715
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2011-02-13 17:01:13 UTC --- Another one: [hjl@gnu-6 ilp32-14]$ cat s.c struct initial_sp { void *sp; long len; }; __thread struct initial_sp __morestack_initial_sp; void bar (void *); void foo () { bar (&__morestack_initial_sp.len); } [hjl@gnu-6 ilp32-14]$ make s.s /export/build/gnu/gcc-x32/build-x86_64-linux/gcc/xgcc -B/export/build/gnu/gcc-x32/build-x86_64-linux/gcc/ -S -o s.s -mx32 -O2 -g -fPIC s.c s.c: In function \u2018foo\u2019: s.c:12:1: error: unrecognizable insn: (insn 8 7 9 3 (set (reg/f:SI 59) (const:SI (plus:SI (symbol_ref:SI ("__morestack_initial_sp") [flags 0x10] <var_decl 0x7f9e580eb000 __morestack_initial_sp>) (const_int 4 [0x4])))) s.c:11 -1 (nil)) s.c:12:1: internal compiler error: in extract_insn, at recog.c:2109 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. make: *** [s.s] Error 1 [hjl@gnu-6 ilp32-14]$