http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56131
vries at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2013-01-28 Ever Confirmed|0 |1 --- Comment #2 from vries at gcc dot gnu.org 2013-01-28 23:15:32 UTC --- I can reproduce this on a x86_64-linux to sparc-linux cross-compiler. The segv is due to bb being null and dereferenced: ... Program received signal SIGSEGV, Segmentation fault. 0x000000000066145b in delete_insn (insn=0x7ffff6b1a480) at gcc/cfgrtl.c:150 150 BB_HEAD (bb) = bb_note; (gdb) p bb $4 = (basic_block) 0x0 ... the bb var is set here: ... 138 basic_block bb = BLOCK_FOR_INSN (insn); ... with insn being: ... (gdb) call debug_rtx (insn) (code_label 22 21 23 3 ("lbl1") [0 uses]) ...