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Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index 29ec05c..7c57111 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -4162,7 +4162,8 @@ std_gimplify_va_arg_expr (tree valist, tree type, tree *pre_p, tree *post_p) /* va_list pointer is aligned to PARM_BOUNDARY. If argument actually requires greater alignment, we must perform dynamic alignment. */ - if (boundary > align) + if (boundary > align + && !integer_zerop (TYPE_SIZE (type))) { t = fold_convert (TREE_TYPE (valist), size_int (boundary - 1)); t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist_tmp, |