diff options
Diffstat (limited to 'gcc/targhooks.c')
| -rw-r--r-- | gcc/targhooks.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/targhooks.c b/gcc/targhooks.c index 822a0313e9e..b6443d204a6 100644 --- a/gcc/targhooks.c +++ b/gcc/targhooks.c @@ -1414,9 +1414,11 @@ default_ref_may_alias_errno (ao_ref *ref) if (TYPE_UNSIGNED (TREE_TYPE (base)) || TYPE_MODE (TREE_TYPE (base)) != TYPE_MODE (integer_type_node)) return false; - /* The default implementation assumes an errno location - declaration is never defined in the current compilation unit. */ + /* The default implementation assumes an errno location declaration + is never defined in the current compilation unit and may not be + aliased by a local variable. */ if (DECL_P (base) + && DECL_EXTERNAL (base) && !TREE_STATIC (base)) return true; else if (TREE_CODE (base) == MEM_REF |