pt.c: add missing %< and %>

gcc/cp/ChangeLog:
	* pt.c (listify): Use %< and %> for description of #include.

gcc/testsuite/ChangeLog:
	* g++.dg/cpp0x/auto21.C: Update dg-error to reflect addition of
	quotes.
	* g++.dg/cpp0x/missing-initializer_list-include.C: Likewise.

From-SVN: r254281

gcc/cp/ChangeLog

 2017-10-31  David Malcolm  <dmalcolm@redhat.com>
 
+	* pt.c (listify): Use %< and %> for description of #include.
+
+2017-10-31  David Malcolm  <dmalcolm@redhat.com>
+
 	* class.c (explain_non_literal_class): Use UNKNOWN_LOCATION rather
 	than 0.
 	* name-lookup.c (suggest_alternatives_for): Update for renaming of

gcc/cp/pt.c

@@ -25132,7 +25132,7 @@ listify (tree arg)
       maybe_add_include_fixit (&richloc, "<initializer_list>");
       error_at (&richloc,
 		"deducing from brace-enclosed initializer list"
-		" requires #include <initializer_list>");
+		" requires %<#include <initializer_list>%>");
 
       return error_mark_node;
     }

gcc/testsuite/ChangeLog

 2017-10-31  David Malcolm  <dmalcolm@redhat.com>
 
+	* g++.dg/cpp0x/auto21.C: Update dg-error to reflect addition of
+	quotes.
+	* g++.dg/cpp0x/missing-initializer_list-include.C: Likewise.
+
+2017-10-31  David Malcolm  <dmalcolm@redhat.com>
+
 	* gcc.dg/plugin/diagnostic_plugin_show_trees.c (show_tree): Update
 	for renaming of error_at_rich_loc and inform_at_rich_loc.
 	* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c

gcc/testsuite/g++.dg/cpp0x/auto21.C

 // Origin PR c++/47208
 // { dg-do compile { target c++11 } }
 
-constexpr auto list = { }; // { dg-error "deducing from brace-enclosed initializer list requires #include <initializer_list>" }
+constexpr auto list = { }; // { dg-error "deducing from brace-enclosed initializer list requires '#include <initializer_list>'" }
 static const int l = list.size();

gcc/testsuite/g++.dg/cpp0x/missing-initializer_list-include.C

@@ -7,7 +7,7 @@
 
 void test (int i)
 {
-  auto a = { &i }; // { dg-error "deducing from brace-enclosed initializer list requires #include <initializer_list>" }
+  auto a = { &i }; // { dg-error "deducing from brace-enclosed initializer list requires '#include <initializer_list>'" }
 }
 
 /* Verify the output from -fdiagnostics-generate-patch.