diff options
Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index 2baba02..1e766e6 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -2047,8 +2047,25 @@ check_function_format (status, name, assembler_name, params) && info2->format_type == info->format_type) break; if (info2 == NULL) - warning ("function might be possible candidate for `%s' format attribute", - format_types[info->format_type].name); + { + /* Check if the current function has a parameter to which + the format attribute could be attached; if not, it + can't be a candidate for a format attribute, despite + the vprintf-like or vscanf-like call. */ + tree args; + for (args = DECL_ARGUMENTS (current_function_decl); + args != 0; + args = TREE_CHAIN (args)) + { + if (TREE_CODE (TREE_TYPE (args)) == POINTER_TYPE + && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (args))) + == char_type_node)) + break; + } + if (args != 0) + warning ("function might be possible candidate for `%s' format attribute", + format_types[info->format_type].name); + } } break; } |