diff options
Diffstat (limited to 'gcc/c-family/c-common.cc')
| -rw-r--r-- | gcc/c-family/c-common.cc | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/c-family/c-common.cc b/gcc/c-family/c-common.cc index 587d764..f71cb26 100644 --- a/gcc/c-family/c-common.cc +++ b/gcc/c-family/c-common.cc @@ -394,6 +394,7 @@ const struct c_common_resword c_common_reswords[] = { { "_Alignas", RID_ALIGNAS, D_CONLY }, { "_Alignof", RID_ALIGNOF, D_CONLY }, + { "_Countof", RID_COUNTOF, D_CONLY }, { "_Atomic", RID_ATOMIC, D_CONLY }, { "_BitInt", RID_BITINT, D_CONLY }, { "_Bool", RID_BOOL, D_CONLY }, @@ -4080,6 +4081,31 @@ c_alignof_expr (location_t loc, tree expr) return fold_convert_loc (loc, size_type_node, t); } + +/* Implement the _Countof keyword: + Return the number of elements of an array. */ + +tree +c_countof_type (location_t loc, tree type) +{ + enum tree_code type_code; + + type_code = TREE_CODE (type); + if (type_code != ARRAY_TYPE) + { + error_at (loc, "invalid application of %<_Countof%> to type %qT", type); + return error_mark_node; + } + if (!COMPLETE_TYPE_P (type)) + { + error_at (loc, + "invalid application of %<_Countof%> to incomplete type %qT", + type); + return error_mark_node; + } + + return array_type_nelts_top (type); +} /* Handle C and C++ default attributes. */ |