diff options
Diffstat (limited to 'gcc/cp/tree.cc')
| -rw-r--r-- | gcc/cp/tree.cc | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/gcc/cp/tree.cc b/gcc/cp/tree.cc index 939d2b0..97ce1f6 100644 --- a/gcc/cp/tree.cc +++ b/gcc/cp/tree.cc @@ -5114,6 +5114,35 @@ handle_likeliness_attribute (tree *node, tree name, tree args, return error_mark_node; } +/* The C++11 alignment specifier. It mostly maps to GNU aligned attribute, + but we need to do some extra pedantic checking. */ + +static tree +handle_alignas_attribute (tree *node, tree name, tree args, int flags, + bool *no_add_attrs) +{ + tree t = *node; + tree ret = handle_aligned_attribute (node, name, args, flags, no_add_attrs); + if (pedantic) + { + if (TREE_CODE (*node) == FUNCTION_DECL) + pedwarn (input_location, OPT_Wattributes, + "%<alignas%> on function declaration"); + else if (TREE_CODE (*node) == ENUMERAL_TYPE) + pedwarn (input_location, OPT_Wattributes, + "%<alignas%> on enumerated type"); + else if (TYPE_P (*node) && t != *node) + pedwarn (input_location, OPT_Wattributes, + "%<alignas%> on a type other than class"); + else if (TREE_CODE (*node) == FIELD_DECL && DECL_C_BIT_FIELD (*node)) + pedwarn (input_location, OPT_Wattributes, "%<alignas%> on bit-field"); + else if (TREE_CODE (t) == TYPE_DECL) + pedwarn (input_location, OPT_Wattributes, + "%<alignas%> on a type alias"); + } + return ret; +} + /* Table of valid C++ attributes. */ static const attribute_spec cxx_gnu_attributes[] = { @@ -5162,6 +5191,18 @@ const scoped_attribute_specs std_attribute_table = nullptr, { std_attributes } }; +/* Table of internal attributes. */ +static const attribute_spec internal_attributes[] = +{ + { "aligned", 0, 1, false, false, false, false, + handle_alignas_attribute, attr_aligned_exclusions } +}; + +const scoped_attribute_specs internal_attribute_table = +{ + "internal ", { internal_attributes } +}; + /* Handle an "init_priority" attribute; arguments as in struct attribute_spec.handler. */ static tree |