diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 821e581..dd2f62d 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -15017,8 +15017,12 @@ tree_single_nonzero_warnv_p (tree t, bool *strict_overflow_p) if (!base) return false; - /* Weak declarations may link to NULL. */ - if (DECL_P (base) && flag_delete_null_pointer_checks) + /* Weak declarations may link to NULL. Other things may also be NULL + so protect with -fdelete-null-pointer-checks; but not variables + allocated on the stack. */ + if (DECL_P (base) + && (flag_delete_null_pointer_checks + || (TREE_CODE (base) == VAR_DECL && !TREE_STATIC (base)))) return !VAR_OR_FUNCTION_DECL_P (base) || !DECL_WEAK (base); /* Constants are never weak. */ |