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Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index 377db57..b783c53 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -1093,7 +1093,8 @@ strict_aliasing_warning (tree otype, tree type, tree expr) get_alias_set (TREE_TYPE (TREE_OPERAND (expr, 0))); alias_set_type set2 = get_alias_set (TREE_TYPE (type)); - if (!alias_sets_conflict_p (set1, set2)) + if (set1 != set2 && set2 != 0 + && (set1 == 0 || !alias_sets_conflict_p (set1, set2))) { warning (OPT_Wstrict_aliasing, "dereferencing type-punned " "pointer will break strict-aliasing rules"); |