re PR c++/87547 (G++ reports bad type names for bit-field members)

	PR c++/87547
	* rtti.c (get_tinfo_decl_dynamic): Use unlowered_expr_type instead
	of TREE_TYPE.

	* g++.dg/rtti/typeid12.C: New test.

From-SVN: r265033

gcc/cp/ChangeLog

+2018-10-11  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/87547
+	* rtti.c (get_tinfo_decl_dynamic): Use unlowered_expr_type instead
+	of TREE_TYPE.
+
 2018-10-10  Marek Polacek  <polacek@redhat.com>
 
 	PR c++/87567 - constexpr rejects call to non-constexpr function.

gcc/cp/rtti.c

@@ -273,7 +273,7 @@ get_tinfo_decl_dynamic (tree exp, tsubst_flags_t complain)
   exp = resolve_nondeduced_context (exp, complain);
 
   /* peel back references, so they match.  */
-  type = non_reference (TREE_TYPE (exp));
+  type = non_reference (unlowered_expr_type (exp));
 
   /* Peel off cv qualifiers.  */
   type = TYPE_MAIN_VARIANT (type);

gcc/testsuite/ChangeLog

+2018-10-11  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/87547
+	* g++.dg/rtti/typeid12.C: New test.
+
 2018-10-10  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* g++.dg/other/pr87574.C: New test.

gcc/testsuite/g++.dg/rtti/typeid12.C

+// PR c++/87547
+// { dg-do run }
+
+#include <typeinfo>
+
+struct S { unsigned int a : 4; unsigned int b : 12; int c; unsigned long d : 8; } s;
+
+int
+main ()
+{
+  if (typeid (s.a) != typeid (unsigned int)
+      || typeid (s.b) != typeid (unsigned int)
+      || typeid (s.c) != typeid (int)
+      || typeid (s.d) != typeid (unsigned long))
+    __builtin_abort ();
+}