diff options
Diffstat (limited to 'gcc/cp/tree.c')
| -rw-r--r-- | gcc/cp/tree.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c index c6f216d..e74b79c 100644 --- a/gcc/cp/tree.c +++ b/gcc/cp/tree.c @@ -4428,6 +4428,31 @@ handle_nodiscard_attribute (tree *node, tree name, tree /*args*/, return NULL_TREE; } +/* Handle a C++2a "no_unique_address" attribute; arguments as in + struct attribute_spec.handler. */ +static tree +handle_no_unique_addr_attribute (tree* node, + tree name, + tree /*args*/, + int /*flags*/, + bool* no_add_attrs) +{ + if (TREE_CODE (*node) != FIELD_DECL) + { + warning (OPT_Wattributes, "%qE attribute can only be applied to " + "non-static data members", name); + *no_add_attrs = true; + } + else if (DECL_C_BIT_FIELD (*node)) + { + warning (OPT_Wattributes, "%qE attribute cannot be applied to " + "a bit-field", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + /* Table of valid C++ attributes. */ const struct attribute_spec cxx_attribute_table[] = { @@ -4449,6 +4474,8 @@ const struct attribute_spec std_attribute_table[] = handle_unused_attribute, NULL }, { "nodiscard", 0, 0, false, false, false, false, handle_nodiscard_attribute, NULL }, + { "no_unique_address", 0, 0, true, false, false, false, + handle_no_unique_addr_attribute, NULL }, { NULL, 0, 0, false, false, false, false, NULL, NULL } }; |