gcc/c/ChangeLog: * c-parser.c (c_parser_has_attribute_expression): New function. (c_parser_attribute): New function. (c_parser_attributes): Move code into c_parser_attribute. (c_parser_unary_expression): Handle RID_HAS_ATTRIBUTE_EXPRESSION. gcc/c-family/ChangeLog: * c-attribs.c (type_for_vector_size): New function. (type_valid_for_vector_size): Same. (handle_vector_size_attribute): Move code to the functions above and call them. (validate_attribute, has_attribute): New functions. * c-common.h (has_attribute): Declare. (rid): Add RID_HAS_ATTRIBUTE_EXPRESSION. * c-common.c (c_common_resword): Same. gcc/cp/ChangeLog: * cp-tree.h (cp_check_const_attributes): Declare. * decl2.c (cp_check_const_attributes): Declare extern. * parser.c (cp_parser_has_attribute_expression): New function. (cp_parser_unary_expression): Handle RID_HAS_ATTRIBUTE_EXPRESSION. (cp_parser_gnu_attribute_list): Add argument. gcc/ChangeLog: * doc/extend.texi (Other Builtins): Add __builtin_has_attribute. gcc/testsuite/ChangeLog: * c-c++-common/builtin-has-attribute-2.c: New test. * c-c++-common/builtin-has-attribute-3.c: New test. * c-c++-common/builtin-has-attribute-4.c: New test. * c-c++-common/builtin-has-attribute.c: New test. * gcc.dg/builtin-has-attribute.c: New test. * gcc/testsuite/gcc.target/i386/builtin-has-attribute.c: New test. From-SVN: r266335
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