diff options
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-04-16 21:43:36 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-04-16 21:43:36 +0000 |
| commit | 4e15f806dd1505d3808ece2059cba74318b43b18 (patch) | |
| tree | 8ac5eca0ff97ad9468c6b97f722656193d796728 | |
| parent | 17b5ea6f8887fb3cfa2740e1bf2425d57a6118df (diff) | |
| download | gcc-4e15f806dd1505d3808ece2059cba74318b43b18.tar.gz | |
PR bootstrap/43767
* alias.c (memrefs_conflict_p): Don't crash if CSELIB_VAL_PTR is NULL.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@158450 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/alias.c | 18 |
2 files changed, 15 insertions, 8 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 66f0a9ed5dc..cda15095989 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2010-04-16 Jakub Jelinek <jakub@redhat.com> + + PR bootstrap/43767 + * alias.c (memrefs_conflict_p): Don't crash if CSELIB_VAL_PTR is NULL. + 2010-04-16 Doug Kwan <dougkwan@google.com> * tree-ssa-reassoc.c (struct operand_entry): Add new field ID. diff --git a/gcc/alias.c b/gcc/alias.c index 6ec51ec2967..a1e12fba44e 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -1792,10 +1792,11 @@ memrefs_conflict_p (int xsize, rtx x, int ysize, rtx y, HOST_WIDE_INT c) { if (REG_P (y)) { - struct elt_loc_list *l; - for (l = CSELIB_VAL_PTR (x)->locs; l; l = l->next) - if (REG_P (l->loc) && rtx_equal_for_memref_p (l->loc, y)) - break; + struct elt_loc_list *l = NULL; + if (CSELIB_VAL_PTR (x)) + for (l = CSELIB_VAL_PTR (x)->locs; l; l = l->next) + if (REG_P (l->loc) && rtx_equal_for_memref_p (l->loc, y)) + break; if (l) x = y; else @@ -1809,10 +1810,11 @@ memrefs_conflict_p (int xsize, rtx x, int ysize, rtx y, HOST_WIDE_INT c) { if (REG_P (x)) { - struct elt_loc_list *l; - for (l = CSELIB_VAL_PTR (y)->locs; l; l = l->next) - if (REG_P (l->loc) && rtx_equal_for_memref_p (l->loc, x)) - break; + struct elt_loc_list *l = NULL; + if (CSELIB_VAL_PTR (y)) + for (l = CSELIB_VAL_PTR (y)->locs; l; l = l->next) + if (REG_P (l->loc) && rtx_equal_for_memref_p (l->loc, x)) + break; if (l) y = x; else |