PR c++/80043 - ICE with -fpermissive

	* typeck.c (convert_for_assignment): Handle instantiate_type
	not giving an error.

From-SVN: r246180

gcc/cp/ChangeLog

+2017-03-15  Jason Merrill  <jason@redhat.com>
+
+	PR c++/80043 - ICE with -fpermissive
+	* typeck.c (convert_for_assignment): Handle instantiate_type
+	not giving an error.
+
 2017-03-14  Nathan Sidwell  <nathan@acm.org>
 
 	PR c++/79393 DR 1658 workaround

gcc/cp/typeck.c

@@ -8486,7 +8486,12 @@ convert_for_assignment (tree type, tree rhs,
 		 overloaded function.  Call instantiate_type to get error
 		 messages.  */
 	      if (rhstype == unknown_type_node)
-		instantiate_type (type, rhs, tf_warning_or_error);
+		{
+		  tree r = instantiate_type (type, rhs, tf_warning_or_error);
+		  /* -fpermissive might allow this.  */
+		  if (!seen_error ())
+		    return r;
+		}
 	      else if (fndecl)
 		error ("cannot convert %qT to %qT for argument %qP to %qD",
 		       rhstype, type, parmnum, fndecl);

gcc/testsuite/g++.dg/parse/ptrmem7.C

+// PR c++/80043
+// { dg-options -fpermissive }
+
+struct A
+{
+  template<int> void foo()
+  {
+    void (A::* fp)();
+    fp = A::foo<0>;		// { dg-warning "assuming pointer to member" }
+  }
+};
+
+void bar()
+{
+  A().foo<0>();
+}