c++: Sorry about type-dependent arg for __builtin_has_attribute [PR90915]

Until 92104 is fixed, let's sorry rather than crash.

	PR c++/90915
	* parser.c (cp_parser_has_attribute_expression): Sorry on a
	type-dependent argument.

	* g++.dg/ext/builtin-has-attribute.C: New test.

diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 42d7b1c03361829d762b427b78be9470df751195..45ad2c05288dfcce96e624852fe139c8aca7b30e 100644 (file)
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -8677,7 +8677,12 @@ cp_parser_has_attribute_expression (cp_parser *parser)
   location_t atloc = cp_lexer_peek_token (parser->lexer)->location;
   if (tree attr = cp_parser_gnu_attribute_list (parser, /*exactly_one=*/true))
     {
-      if (oper != error_mark_node)
+      if (oper == error_mark_node)
+       /* Nothing.  */;
+      else if (type_dependent_expression_p (oper))
+       sorry_at (atloc, "%<__builtin_has_attribute%> with dependent argument "
+                 "not supported yet");
+      else
        {
          /* Fold constant expressions used in attributes first.  */
          cp_check_const_attributes (attr);

diff --git a/gcc/testsuite/g++.dg/ext/builtin-has-attribute.C b/gcc/testsuite/g++.dg/ext/builtin-has-attribute.C
new file mode 100644 (file)
index 0000000..3438dd5
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/builtin-has-attribute.C
@@ -0,0 +1,8 @@
+// PR c++/90915
+// { dg-do compile { target c++11 } }
+
+template<typename T>
+void foo ()
+{
+  static_assert(!__builtin_has_attribute(T::a, aligned), ""); // { dg-message "sorry, unimplemented: .__builtin_has_attribute. with dependent argument not supported yet" }
+}