diff options
Diffstat (limited to 'gcc/cp/tree.c')
| -rw-r--r-- | gcc/cp/tree.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c index 7f71891..a004bb1 100644 --- a/gcc/cp/tree.c +++ b/gcc/cp/tree.c @@ -4369,9 +4369,14 @@ zero_init_p (const_tree t) warn_unused_result attribute. */ static tree -handle_nodiscard_attribute (tree *node, tree name, tree /*args*/, +handle_nodiscard_attribute (tree *node, tree name, tree args, int /*flags*/, bool *no_add_attrs) { + if (args && TREE_CODE (TREE_VALUE (args)) != STRING_CST) + { + error ("%qE attribute argument must be a string constant", name); + *no_add_attrs = true; + } if (TREE_CODE (*node) == FUNCTION_DECL) { if (VOID_TYPE_P (TREE_TYPE (TREE_TYPE (*node))) @@ -4461,7 +4466,7 @@ const struct attribute_spec std_attribute_table[] = affects_type_identity, handler, exclude } */ { "maybe_unused", 0, 0, false, false, false, false, handle_unused_attribute, NULL }, - { "nodiscard", 0, 0, false, false, false, false, + { "nodiscard", 0, 1, false, false, false, false, handle_nodiscard_attribute, NULL }, { "no_unique_address", 0, 0, true, false, false, false, handle_no_unique_addr_attribute, NULL }, |