https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89234
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
copy_reg_eh_region_note_forward is called with note_or_insn being
(note 19 18 20 3 [bb 3] NOTE_INSN_BASIC_BLOCK)
and because it is not INSN_P, it assumes it must be a REG_EH_REGION note and
uses XEXP (note_or_insn, 0) on it and happily creates
(expr_list:REG_EH_REGION (jump_insn 18 17 19 2 (set (pc)
(if_then_else (ne (reg:CC 68 0 [130])
(const_int 0 [0]))
(label_ref 24)
(pc))) "pr89234.c":7:6 761 {*cbranch}
(int_list:REG_BR_PROB 1073204964 (nil))
-> 24)
(nil))
--- gcc/except.c.jj 2019-01-10 11:43:14.387377695 +0100
+++ gcc/except.c 2019-02-07 15:11:27.756869475 +0100
@@ -1756,6 +1756,8 @@ copy_reg_eh_region_note_forward (rtx not
if (note == NULL)
return;
}
+ else if (is_a <rtx_insn *> (note_or_insn))
+ return;
note = XEXP (note, 0);
for (insn = first; insn != last ; insn = NEXT_INSN (insn))
should fix the ICE, or LRA would need to be tweaked to make sure it never calls
it with NOTEs and other non-INSN_P rtx_insns.
