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| author | Jakub Jelinek <jakub@redhat.com> | 2010-04-16 23:43:36 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2010-04-16 23:43:36 +0200 |
| commit | 24f8d71e41a1d5bcb717356dabeffadb10a75b6f (patch) | |
| tree | 8ac5eca0ff97ad9468c6b97f722656193d796728 /gcc/alias.c | |
| parent | f1665f5cd2038bf95e34e9ea577bd553c69b3563 (diff) | |
| download | gcc-24f8d71e41a1d5bcb717356dabeffadb10a75b6f.zip gcc-24f8d71e41a1d5bcb717356dabeffadb10a75b6f.tar.gz gcc-24f8d71e41a1d5bcb717356dabeffadb10a75b6f.tar.bz2 | |
re PR bootstrap/43767 (Revision 158401 failed to bootstrap)
PR bootstrap/43767
* alias.c (memrefs_conflict_p): Don't crash if CSELIB_VAL_PTR is NULL.
From-SVN: r158450
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index 6ec51ec..a1e12fb 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 |