[testsuite] add required comments to dg-message directives in g++.dg

[Janis Johnson]

Several tests in g++.dg use dg-message with a target list and line
number but without the comment field, which is required when those
additional arguments are used.  The local replacement of dg-message
silently ignores errors (something I plan to fix), so the checks have
been ignored.  Unprocessed notes (as opposed to errors and warning)
in compiler output are intentionally ignored, so this wasn't noticed
before..

This patch adds the required comments, and the tests now pass on
i686-pc-linux-gnu.  OK for trunk?

Janis

2012-06-28  Janis Johnson  <jani...@codesourcery.com>

        * g++.dg/template/error46.C: Add missing comment to dg-message.
        * g++.dg/template/crash107.C: Likewise.
        * g++.dg/template/error47.C: Likewise.
        * g++.dg/template/crash108.C: Likewise.
        * g++.dg/overload/operator5.C: Likewise.

Index: g++.dg/template/error46.C
===================================================================
--- g++.dg/template/error46.C   (revision 189025)
+++ g++.dg/template/error46.C   (working copy)
@@ -8,4 +8,4 @@
 {
   foo(A<0>(), A<1>()); // { dg-error "no matching" }
 }
-// { dg-message "candidate|parameter 'N' ('0' and '1')" { target *-*-* } 9 }
+// { dg-message "candidate|parameter 'N' ('0' and '1')" "" { target *-*-* } 9 }
Index: g++.dg/template/crash107.C
===================================================================
--- g++.dg/template/crash107.C  (revision 189025)
+++ g++.dg/template/crash107.C  (working copy)
@@ -14,7 +14,7 @@
     }
 };
 Vec<double> v(3,4,12); // { dg-error "no matching" }
-// { dg-message "note" { target *-*-* } 16 }
+// { dg-message "note" "note" { target *-*-* } 16 }
 Vec<double> V(12,4,3);  // { dg-error "no matching" }
-// { dg-message "note" { target *-*-* } 18 }
+// { dg-message "note" "note" { target *-*-* } 18 }
 Vec<double> c = v^V;   // { dg-message "required" }
Index: g++.dg/template/error47.C
===================================================================
--- g++.dg/template/error47.C   (revision 189025)
+++ g++.dg/template/error47.C   (working copy)
@@ -6,4 +6,4 @@
 {
   foo(0, p); // { dg-error "no matching" }
 }
-// { dg-message "candidate|parameter 'T' ('int' and 'void*')" { target *-*-* } 
7 }
+// { dg-message "candidate|parameter 'T' ('int' and 'void*')" "" { target 
*-*-* } 7 }
Index: g++.dg/template/crash108.C
===================================================================
--- g++.dg/template/crash108.C  (revision 189025)
+++ g++.dg/template/crash108.C  (working copy)
@@ -2,4 +2,4 @@
 
 template<class T> struct A {A(int b=k(0));}; // { dg-error "arguments" }
 void f(int k){A<int> a;} // // { dg-error "parameter|declared" }
-// { dg-message "note" { target *-*-* } 3 }
+// { dg-message "note" "note" { target *-*-* } 3 }
Index: g++.dg/overload/operator5.C
===================================================================
--- g++.dg/overload/operator5.C (revision 189025)
+++ g++.dg/overload/operator5.C (working copy)
@@ -13,4 +13,4 @@
                                       const String& b,
                                       bool ignoreCase) {
   return ignoreCase ? equalIgnoringCase(a, b) : (a == b); } // { dg-error 
"ambiguous" }
-// { dg-message "note" { target *-*-* } 15 }
+// { dg-message "note" "note" { target *-*-* } 15 }