re PR c++/91110 (ICE: tree check: expected class 'type', have 'exceptional'…

re PR c++/91110 (ICE: tree check: expected class 'type', have 'exceptional' (error_mark) in cp_omp_mappable_type_1, at cp/decl2.c:1421)

	PR c++/91110
	* decl2.c (cp_omp_mappable_type_1): Don't emit any note for
	error_mark_node type.

	* g++.dg/gomp/pr91110.C: New test.

From-SVN: r273248

gcc/cp/ChangeLog

+2019-07-08  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/91110
+	* decl2.c (cp_omp_mappable_type_1): Don't emit any note for
+	error_mark_node type.
+
 2019-07-05  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/67184

gcc/cp/decl2.c

@@ -1416,7 +1416,7 @@ cp_omp_mappable_type_1 (tree type, bool notes)
   /* Mappable type has to be complete.  */
   if (type == error_mark_node || !COMPLETE_TYPE_P (type))
     {
-      if (notes)
+      if (notes && type != error_mark_node)
 	{
 	  tree decl = TYPE_MAIN_DECL (type);
 	  inform ((decl ? DECL_SOURCE_LOCATION (decl) : input_location),

gcc/testsuite/ChangeLog

+2019-07-08  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/91110
+	* g++.dg/gomp/pr91110.C: New test.
+
 2019-07-08  Segher Boessenkool  <segher@kernel.crashing.org>
 
 	PR rtl-optimization/88233

gcc/testsuite/g++.dg/gomp/pr91110.C

+// PR c++/91110
+// { dg-do compile }
+
+void
+foo ()
+{
+  X b[2];	// { dg-error "'X' was not declared in this scope" }
+  b[0] = 1;	// { dg-error "'b' was not declared in this scope" }
+  #pragma omp target map(to: b)	// { dg-error "'b' does not have a mappable type in 'map' clause" }
+  ;
+}