diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index f728db6..3ee2bc7 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -9582,11 +9582,22 @@ tree_expr_nonzero_p (tree t) break; case ADDR_EXPR: - /* Weak declarations may link to NULL. */ - if (DECL_P (TREE_OPERAND (t, 0))) - return !DECL_WEAK (TREE_OPERAND (t, 0)); - /* Constants and all other cases are never weak. */ - return true; + { + tree base = get_base_address (TREE_OPERAND (t, 0)); + + if (!base) + return false; + + /* Weak declarations may link to NULL. */ + if (DECL_P (base)) + return !DECL_WEAK (base); + + /* Constants are never weak. */ + if (TREE_CODE_CLASS (TREE_CODE (base)) == 'c') + return true; + + return false; + } case COND_EXPR: return (tree_expr_nonzero_p (TREE_OPERAND (t, 1)) |