When promote_debug_loc was first introduced, it would never be called
with a NULL loc list. However, because of the strategy of temporarily
resetting loc lists before recursion introduced a few months ago in
alias.c, the earlier assumption no longer holds.
This patch adusts promote_debug_loc to deal with this case.
Ok to install?
for gcc/ChangeLog
from Alexandre Oliva <aol...@redhat.com>
PR debug/53682
* cselib.c (promote_debug_loc): Don't crash on NULL argument.
Index: gcc/cselib.c
===================================================================
--- gcc/cselib.c.orig 2012-06-17 22:52:27.740087279 -0300
+++ gcc/cselib.c 2012-06-18 08:55:32.948832112 -0300
@@ -322,7 +322,7 @@ new_elt_loc_list (cselib_val *val, rtx l
static inline void
promote_debug_loc (struct elt_loc_list *l)
{
- if (l->setting_insn && DEBUG_INSN_P (l->setting_insn)
+ if (l && l->setting_insn && DEBUG_INSN_P (l->setting_insn)
&& (!cselib_current_insn || !DEBUG_INSN_P (cselib_current_insn)))
{
n_debug_values--;
--
Alexandre Oliva, freedom fighter http://FSFLA.org/~lxoliva/
You must be the change you wish to see in the world. -- Gandhi
Be Free! -- http://FSFLA.org/ FSF Latin America board member
Free Software Evangelist Red Hat Brazil Compiler Engineer
