re PR c++/71075 (Broken diagnostic: 'integer_cst' not supported by 'dump_decl')

	PR c++/71075
	* pt.c (unify_template_argument_mismatch): Use %qE instead of %qD.

	* g++.dg/diagnostic/pr71075.C: New test.

From-SVN: r236487

gcc/cp/ChangeLog

+2016-05-19  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/71075
+	* pt.c (unify_template_argument_mismatch): Use %qE instead of %qD.
+
 2016-05-19  Jason Merrill  <jason@redhat.com>
 
 	PR c++/10200

gcc/cp/pt.c

@@ -6165,7 +6165,7 @@ unify_template_argument_mismatch (bool explain_p, tree parm, tree arg)
 {
   if (explain_p)
     inform (input_location,
-	    "  template argument %qE does not match %qD", arg, parm);
+	    "  template argument %qE does not match %qE", arg, parm);
   return 1;
 }
 

gcc/testsuite/ChangeLog

+2016-05-19  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/71075
+	* g++.dg/diagnostic/pr71075.C: New test.
+
 2016-05-19  David Malcolm  <dmalcolm@redhat.com>
 
 	PR c++/71184

gcc/testsuite/g++.dg/diagnostic/pr71075.C

+// PR c++/71075
+
+template<typename T, int I> struct A {};
+template<typename T> void foo(A<T,1>) {}
+int main() {
+  foo(A<int,2>()); // { dg-error "no matching" }
+// { dg-message "template argument .2. does not match .1." "" { target *-*-* } 6 }
+}