diff options
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index 1ad33f2..b7db928 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -2801,8 +2801,13 @@ std_expand_builtin_va_start (stdarg_p, valist, nextarg) if (! stdarg_p) { + /* The dummy named parameter is declared as a 'word' sized + object, but if a 'word' is smaller than an 'int', it would + have been promoted to int when it was added to the arglist. */ int align = PARM_BOUNDARY / BITS_PER_UNIT; - int offset = (((UNITS_PER_WORD + align - 1) / align) * align); + int size = MAX (UNITS_PER_WORD, + GET_MODE_SIZE (TYPE_MODE (integer_type_node))); + int offset = ((size + align - 1) / align) * align; nextarg = plus_constant (nextarg, -offset); } |