decl.c (duplicate_decls): Replace pairs of errors and permerrors with error + inform (permerror + inform...

/cp
2013-12-05  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (duplicate_decls): Replace pairs of errors and permerrors
	with error + inform (permerror + inform, respectively).

/testsuite
2013-12-05  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/cpp0x/constexpr-46336.C: Adjust expected messages.
	* g++.dg/cpp0x/defaulted2.C: Likewise.
	* g++.dg/cpp1y/auto-fn8.C: Likewise.
	* g++.dg/gomp/udr-3.C: Likewise.
	* g++.dg/lookup/extern-c-redecl5.C: Likewise.
	* g++.dg/lookup/linkage1.C: Likewise.
	* g++.dg/overload/new1.C: Likewise.
	* g++.dg/parse/friend5.C: Likewise.
	* g++.dg/parse/namespace-alias-1.C: Likewise.
	* g++.dg/parse/namespace10.C: Likewise.
	* g++.dg/parse/redef2.C: Likewise.
	* g++.dg/template/friend44.C: Likewise.
	* g++.old-deja/g++.brendan/crash42.C: Likewise.
	* g++.old-deja/g++.brendan/crash52.C: Likewise.
	* g++.old-deja/g++.brendan/crash55.C: Likewise.
	* g++.old-deja/g++.jason/overload21.C: Likewise.
	* g++.old-deja/g++.jason/overload5.C: Likewise.
	* g++.old-deja/g++.jason/redecl1.C: Likewise.
	* g++.old-deja/g++.law/arm8.C: Likewise.
	* g++.old-deja/g++.other/main1.C: Likewise.

From-SVN: r205697

23 files changed, 112 insertions, 77 deletions

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 2583e5e..2d5617a 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2013-12-05  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* decl.c (duplicate_decls): Replace pairs of errors and permerrors
+	with error + inform (permerror + inform, respectively).
+
 2013-12-04  Joseph Myers  <joseph@codesourcery.com>
 
 	PR c/52023
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 820d9c0..a6744c7 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -1299,8 +1299,9 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	{
 	  if (warning (OPT_Wattributes, "function %q+D redeclared as inline",
 		       newdecl))
-	    inform (input_location, "previous declaration of %q+D "
-		    "with attribute noinline", olddecl);
+	    inform (DECL_SOURCE_LOCATION (olddecl),
+		    "previous declaration of %qD with attribute noinline",
+		    olddecl);
 	}
       else if (DECL_DECLARED_INLINE_P (olddecl)
 	       && DECL_UNINLINABLE (newdecl)
@@ -1308,7 +1309,8 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	{
 	  if (warning (OPT_Wattributes, "function %q+D redeclared with "
 		       "attribute noinline", newdecl))
-	    inform (input_location, "previous declaration of %q+D was inline",
+	    inform (DECL_SOURCE_LOCATION (olddecl),
+		    "previous declaration of %qD was inline",
 		    olddecl);
 	}
     }
@@ -1343,11 +1345,8 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	    warning (0, "library function %q#D redeclared as non-function %q#D",
 		     olddecl, newdecl);
 	  else
-	    {
-	      error ("declaration of %q#D", newdecl);
-	      error ("conflicts with built-in declaration %q#D",
-		     olddecl);
-	    }
+	    error ("declaration of %q#D conflicts with built-in "
+		   "declaration %q#D", newdecl, olddecl);
 	  return NULL_TREE;
 	}
       else if (DECL_OMP_DECLARE_REDUCTION_P (olddecl))
@@ -1355,8 +1354,8 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	  gcc_assert (DECL_OMP_DECLARE_REDUCTION_P (newdecl));
 	  error_at (DECL_SOURCE_LOCATION (newdecl),
 		    "redeclaration of %<pragma omp declare reduction%>");
-	  error_at (DECL_SOURCE_LOCATION (olddecl),
-		    "previous %<pragma omp declare reduction%> declaration");
+	  inform (DECL_SOURCE_LOCATION (olddecl),
+		  "previous %<pragma omp declare reduction%> declaration");
 	  return error_mark_node;
 	}
       else if (!types_match)
@@ -1407,11 +1406,8 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	      /* A near match; override the builtin.  */
 
 	      if (TREE_PUBLIC (newdecl))
-		{
-		  warning (0, "new declaration %q#D", newdecl);
-		  warning (0, "ambiguates built-in declaration %q#D",
-			   olddecl);
-		}
+		warning (0, "new declaration %q#D ambiguates built-in "
+			 "declaration %q#D", newdecl, olddecl);
 	      else
 		warning (OPT_Wshadow, 
                          DECL_BUILT_IN (olddecl)
@@ -1504,7 +1500,8 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
       error ("%q#D redeclared as different kind of symbol", newdecl);
       if (TREE_CODE (olddecl) == TREE_LIST)
 	olddecl = TREE_VALUE (olddecl);
-      inform (input_location, "previous declaration of %q+#D", olddecl);
+      inform (DECL_SOURCE_LOCATION (olddecl),
+	      "previous declaration %q#D", olddecl);
 
       return error_mark_node;
     }
@@ -1523,8 +1520,9 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	  if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL
 	      || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
 	    {
-	      error ("declaration of template %q#D", newdecl);
-	      error ("conflicts with previous declaration %q+#D", olddecl);
+	      error ("conflicting declaration of template %q#D", newdecl);
+	      inform (DECL_SOURCE_LOCATION (olddecl),
+		      "previous declaration %q#D", olddecl);
 	      return error_mark_node;
 	    }
 	  else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == FUNCTION_DECL
@@ -1538,8 +1536,9 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 		   && same_type_p (TREE_TYPE (TREE_TYPE (newdecl)),
 				   TREE_TYPE (TREE_TYPE (olddecl))))
 	    {
-	      error ("new declaration %q#D", newdecl);
-	      error ("ambiguates old declaration %q+#D", olddecl);
+	      error ("ambiguating new declaration %q#D", newdecl);
+	      inform (DECL_SOURCE_LOCATION (olddecl),
+		      "old declaration %q#D", olddecl);
 	    }
 	  return NULL_TREE;
 	}
@@ -1547,9 +1546,10 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	{
 	  if (DECL_EXTERN_C_P (newdecl) && DECL_EXTERN_C_P (olddecl))
 	    {
-	      error ("declaration of C function %q#D conflicts with",
+	      error ("conflicting declaration of C function %q#D",
 		     newdecl);
-	      error ("previous declaration %q+#D here", olddecl);
+	      inform (DECL_SOURCE_LOCATION (olddecl),
+		      "previous declaration %q#D", olddecl);
 	      return NULL_TREE;
 	    }
 	  /* For function versions, params and types match, but they
@@ -1559,8 +1559,9 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 		   && compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
 			      TYPE_ARG_TYPES (TREE_TYPE (olddecl))))
 	    {
-	      error ("new declaration %q#D", newdecl);
-	      error ("ambiguates old declaration %q+#D", olddecl);
+	      error ("ambiguating new declaration of %q#D", newdecl);
+	      inform (DECL_SOURCE_LOCATION (olddecl),
+		      "old declaration %q#D", olddecl);
               return error_mark_node;
 	    }
 	  else
@@ -1569,8 +1570,8 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
       else
 	{
 	  error ("conflicting declaration %q#D", newdecl);
-	  inform (input_location,
-		  "%q+D has a previous declaration as %q#D", olddecl, olddecl);
+	  inform (DECL_SOURCE_LOCATION (olddecl),
+		  "previous declaration as %q#D", olddecl);
 	  return error_mark_node;
 	}
     }
@@ -1622,8 +1623,9 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	 A namespace-name defined at global scope shall not be
 	 declared as the name of any other entity in any global scope
 	 of the program.  */
-      error ("declaration of namespace %qD conflicts with", newdecl);
-      error ("previous declaration of namespace %q+D here", olddecl);
+      error ("conflicting declaration of namespace %qD", newdecl);
+      inform (DECL_SOURCE_LOCATION (olddecl),
+	      "previous declaration of namespace %qD here", olddecl);
       return error_mark_node;
     }
   else
@@ -1645,9 +1647,10 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	       && prototype_p (TREE_TYPE (newdecl)))
 	{
 	  /* Prototype decl follows defn w/o prototype.  */
-	  warning_at (input_location, 0, "prototype for %q+#D", newdecl);
-	  warning_at (DECL_SOURCE_LOCATION (olddecl), 0,
-		      "follows non-prototype definition here");
+	  warning_at (DECL_SOURCE_LOCATION (newdecl), 0,
+		      "prototype specified for %q#D", newdecl);
+	  inform (DECL_SOURCE_LOCATION (olddecl),
+		  "previous non-prototype definition here");
 	}
       else if (VAR_OR_FUNCTION_DECL_P (olddecl)
 	       && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl))
@@ -1686,10 +1689,11 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	    }
 	  else
 	    {
-	      error ("previous declaration of %q+#D with %qL linkage",
-		     olddecl, DECL_LANGUAGE (olddecl));
-	      error ("conflicts with new declaration with %qL linkage",
-		     DECL_LANGUAGE (newdecl));
+	      error ("conflicting declaration of %q#D with %qL linkage",
+		     newdecl, DECL_LANGUAGE (newdecl));
+	      inform (DECL_SOURCE_LOCATION (olddecl),
+		      "previous declaration with %qL linkage",
+		      DECL_LANGUAGE (olddecl));
 	    }
 	}
 
@@ -1729,19 +1733,20 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 		    if (1 == simple_cst_equal (TREE_PURPOSE (t1),
 					       TREE_PURPOSE (t2)))
 		      {
-			permerror (input_location,
-				   "default argument given for parameter %d "
-				   "of %q#D", i, newdecl);
-			permerror (input_location,
-				   "after previous specification in %q+#D",
-				   olddecl);
+			if (permerror (input_location,
+				       "default argument given for parameter "
+				       "%d of %q#D", i, newdecl))
+			  permerror (DECL_SOURCE_LOCATION (olddecl),
+				     "previous specification in %q#D here",
+				     olddecl);
 		      }
 		    else
 		      {
 			error ("default argument given for parameter %d "
 			       "of %q#D", i, newdecl);
-			error ("after previous specification in %q+#D",
-			       olddecl);
+			inform (DECL_SOURCE_LOCATION (olddecl),
+				"previous specification in %q#D here",
+				olddecl);
 		      }
 		  }
 	    }
@@ -1805,7 +1810,8 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	  if (warning (OPT_Wredundant_decls,
 		       "redundant redeclaration of %qD in same scope",
 		       newdecl))
-	    inform (input_location, "previous declaration of %q+D", olddecl);
+	    inform (DECL_SOURCE_LOCATION (olddecl),
+		    "previous declaration of %qD", olddecl);
 	}
 
       if (!(DECL_TEMPLATE_INSTANTIATION (olddecl)
@@ -1814,7 +1820,8 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	  if (DECL_DELETED_FN (newdecl))
 	    {
 	      error ("deleted definition of %qD", newdecl);
-	      error ("after previous declaration %q+D", olddecl);
+	      inform (DECL_SOURCE_LOCATION (olddecl),
+		      "previous declaration of %qD", olddecl);
 	    }
 	  DECL_DELETED_FN (newdecl) |= DECL_DELETED_FN (olddecl);
 	}
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index b074cfa..fa75f4f 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,26 @@
+2013-12-05  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* g++.dg/cpp0x/constexpr-46336.C: Adjust expected messages.
+	* g++.dg/cpp0x/defaulted2.C: Likewise.
+	* g++.dg/cpp1y/auto-fn8.C: Likewise.
+	* g++.dg/gomp/udr-3.C: Likewise.
+	* g++.dg/lookup/extern-c-redecl5.C: Likewise.
+	* g++.dg/lookup/linkage1.C: Likewise.
+	* g++.dg/overload/new1.C: Likewise.
+	* g++.dg/parse/friend5.C: Likewise.
+	* g++.dg/parse/namespace-alias-1.C: Likewise.
+	* g++.dg/parse/namespace10.C: Likewise.
+	* g++.dg/parse/redef2.C: Likewise.
+	* g++.dg/template/friend44.C: Likewise.
+	* g++.old-deja/g++.brendan/crash42.C: Likewise.
+	* g++.old-deja/g++.brendan/crash52.C: Likewise.
+	* g++.old-deja/g++.brendan/crash55.C: Likewise.
+	* g++.old-deja/g++.jason/overload21.C: Likewise.
+	* g++.old-deja/g++.jason/overload5.C: Likewise.
+	* g++.old-deja/g++.jason/redecl1.C: Likewise.
+	* g++.old-deja/g++.law/arm8.C: Likewise.
+	* g++.old-deja/g++.other/main1.C: Likewise.
+
 2013-12-05  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/56787
diff --git a/gcc/testsuite/g++.dg/cpp0x/constexpr-46336.C b/gcc/testsuite/g++.dg/cpp0x/constexpr-46336.C
index 4268a6b..c021e98 100644
--- a/gcc/testsuite/g++.dg/cpp0x/constexpr-46336.C
+++ b/gcc/testsuite/g++.dg/cpp0x/constexpr-46336.C
@@ -4,7 +4,7 @@
 extern "C" {
   enum A { };
   inline constexpr A
-  f(A a, A b)			// { dg-error "previous declaration" }
+  f(A a, A b)			// { dg-message "previous declaration" }
   { return A(static_cast<int>(a) & static_cast<int>(b)); }
   enum B { };
   inline constexpr B
diff --git a/gcc/testsuite/g++.dg/cpp0x/defaulted2.C b/gcc/testsuite/g++.dg/cpp0x/defaulted2.C
index 3cef600..5f05424 100644
--- a/gcc/testsuite/g++.dg/cpp0x/defaulted2.C
+++ b/gcc/testsuite/g++.dg/cpp0x/defaulted2.C
@@ -1,7 +1,7 @@
 // Negative test for defaulted/deleted fns.
 // { dg-options "-std=c++11" }
 
-void f();			// { dg-error "previous" }
+void f();			// { dg-message "previous" }
 void f() = delete;		// { dg-error "deleted" }
 
 struct A
diff --git a/gcc/testsuite/g++.dg/cpp1y/auto-fn8.C b/gcc/testsuite/g++.dg/cpp1y/auto-fn8.C
index 072f614..15ccfc5 100644
--- a/gcc/testsuite/g++.dg/cpp1y/auto-fn8.C
+++ b/gcc/testsuite/g++.dg/cpp1y/auto-fn8.C
@@ -1,6 +1,6 @@
 // { dg-options "-std=c++1y -pedantic-errors" }
 
-auto f() { return 42; }		// { dg-error "old declaration .auto" }
+auto f() { return 42; }		// { dg-message "old declaration .auto" }
 auto f();			// OK
 int f();			// { dg-error "new declaration" }
 
diff --git a/gcc/testsuite/g++.dg/gomp/udr-3.C b/gcc/testsuite/g++.dg/gomp/udr-3.C
index a560fc1..9fc6f40 100644
--- a/gcc/testsuite/g++.dg/gomp/udr-3.C
+++ b/gcc/testsuite/g++.dg/gomp/udr-3.C
@@ -63,12 +63,12 @@ int y = f4 <S> ();
 
 namespace N1
 {
-  #pragma omp declare reduction (+: ::S: omp_out.s *= omp_in.s)		// { dg-error "previous" }
+  #pragma omp declare reduction (+: ::S: omp_out.s *= omp_in.s)		// { dg-message "previous" }
   #pragma omp declare reduction (+: S: omp_out.s += omp_in.s)		// { dg-error "redeclaration of" }
   void
   f5 ()
   {
-    #pragma omp declare reduction (f5: S: omp_out.s *= omp_in.s)	// { dg-error "previous" }
+    #pragma omp declare reduction (f5: S: omp_out.s *= omp_in.s)	// { dg-message "previous" }
     #pragma omp declare reduction (f5: ::S: omp_out.s += omp_in.s)	// { dg-error "redeclaration of" }
   }
 }
@@ -84,10 +84,10 @@ namespace N2
 
 namespace N3
 {
-  #pragma omp declare reduction (+: ::S: omp_out.s *= omp_in.s)		// { dg-error "previous" }
+  #pragma omp declare reduction (+: ::S: omp_out.s *= omp_in.s)		// { dg-message "previous" }
   #pragma omp declare reduction (+: T: omp_out.t += omp_in.t)
   #pragma omp declare reduction (+: S: omp_out.s += omp_in.s)		// { dg-error "redeclaration of" }
-  #pragma omp declare reduction (n3: long: omp_out += omp_in)		// { dg-error "previous" }
+  #pragma omp declare reduction (n3: long: omp_out += omp_in)		// { dg-message "previous" }
   #pragma omp declare reduction (n3: long int: omp_out += omp_in)	// { dg-error "redeclaration of" }
   #pragma omp declare reduction (n3: short unsigned: omp_out += omp_in)
   #pragma omp declare reduction (n3: short int: omp_out += omp_in)
@@ -95,9 +95,9 @@ namespace N3
   f6 ()
   {
     #pragma omp declare reduction (f6: T: omp_out.t += omp_in.t)
-    #pragma omp declare reduction (f6: S: omp_out.s *= omp_in.s)	// { dg-error "previous" }
+    #pragma omp declare reduction (f6: S: omp_out.s *= omp_in.s)	// { dg-message "previous" }
     #pragma omp declare reduction (f6: ::S: omp_out.s += omp_in.s)	// { dg-error "redeclaration of" }
-    #pragma omp declare reduction (f6: long: omp_out += omp_in)		// { dg-error "previous" }
+    #pragma omp declare reduction (f6: long: omp_out += omp_in)		// { dg-message "previous" }
     #pragma omp declare reduction (f6: long int: omp_out += omp_in)	// { dg-error "redeclaration of" }
     #pragma omp declare reduction (f6: short unsigned: omp_out += omp_in)
     #pragma omp declare reduction (f6: short int: omp_out += omp_in)
@@ -124,7 +124,7 @@ namespace N5
   int
   f7 ()
   {
-    #pragma omp declare reduction (f7: T: omp_out.s *= omp_in.s)	// { dg-error "previous" }
+    #pragma omp declare reduction (f7: T: omp_out.s *= omp_in.s)	// { dg-message "previous" }
     #pragma omp declare reduction (f7: T: omp_out.s += omp_in.s)	// { dg-error "redeclaration of" }
     return 0;
   }
@@ -145,9 +145,9 @@ namespace N6
   f8 ()
   {
     #pragma omp declare reduction (f8: T: omp_out.t += omp_in.t)
-    #pragma omp declare reduction (f8: U: omp_out.s *= omp_in.s)	// { dg-error "previous" }
+    #pragma omp declare reduction (f8: U: omp_out.s *= omp_in.s)	// { dg-message "previous" }
     #pragma omp declare reduction (f8: ::S: omp_out.s += omp_in.s)	// { dg-error "redeclaration of" }
-    #pragma omp declare reduction (f8: long: omp_out += omp_in)		// { dg-error "previous" }
+    #pragma omp declare reduction (f8: long: omp_out += omp_in)		// { dg-message "previous" }
     #pragma omp declare reduction (f8: long int: omp_out += omp_in)	// { dg-error "redeclaration of" }
     #pragma omp declare reduction (f8: short unsigned: omp_out += omp_in)
     #pragma omp declare reduction (f8: short int: omp_out += omp_in)
diff --git a/gcc/testsuite/g++.dg/lookup/extern-c-redecl5.C b/gcc/testsuite/g++.dg/lookup/extern-c-redecl5.C
index 51a342d..4d934c1 100644
--- a/gcc/testsuite/g++.dg/lookup/extern-c-redecl5.C
+++ b/gcc/testsuite/g++.dg/lookup/extern-c-redecl5.C
@@ -6,11 +6,11 @@
 class frok
 {
   int this_errno;
-  friend int fork (void); // { dg-error "previous declaration .*?C\\+\\+. linkage" }
+  friend int fork (void); // { dg-message "previous declaration .*?C\\+\\+. linkage" }
 };
 
 extern "C" int
-fork (void) // { dg-error "conflicts with new declaration .*?C. linkage" }}
+fork (void) // { dg-error "conflicting declaration .*?C. linkage" }}
 {
   frok grouped;
   return grouped.this_errno;
diff --git a/gcc/testsuite/g++.dg/lookup/linkage1.C b/gcc/testsuite/g++.dg/lookup/linkage1.C
index 6f6bdfd..aa6983c 100644
--- a/gcc/testsuite/g++.dg/lookup/linkage1.C
+++ b/gcc/testsuite/g++.dg/lookup/linkage1.C
@@ -1,4 +1,4 @@
 // DR 563
 
-extern int i; // { dg-error "linkage" }
+extern int i; // { dg-message "linkage" }
 extern "C" int i; // { dg-error "linkage" }
diff --git a/gcc/testsuite/g++.dg/overload/new1.C b/gcc/testsuite/g++.dg/overload/new1.C
index f1b7328..bf2190b 100644
--- a/gcc/testsuite/g++.dg/overload/new1.C
+++ b/gcc/testsuite/g++.dg/overload/new1.C
@@ -7,7 +7,7 @@ struct X{
 };
 
 
-void f(X *x = new X);          // { dg-error "" } 
+void f(X *x = new X);          // { dg-message "" } 
 
 void f(X *x = new X(4));       // { dg-error "" } 
 
diff --git a/gcc/testsuite/g++.dg/parse/friend5.C b/gcc/testsuite/g++.dg/parse/friend5.C
index bf1e6bf..43f0612 100644
--- a/gcc/testsuite/g++.dg/parse/friend5.C
+++ b/gcc/testsuite/g++.dg/parse/friend5.C
@@ -2,6 +2,6 @@
  
 extern "C" struct A
 {
-  friend void foo(int) {} // { dg-error "declaration" }
+  friend void foo(int) {} // { dg-message "declaration" }
   friend void foo() {} // { dg-error "foo" "err" }
 };
diff --git a/gcc/testsuite/g++.dg/parse/namespace-alias-1.C b/gcc/testsuite/g++.dg/parse/namespace-alias-1.C
index 627a95b..4b44335 100644
--- a/gcc/testsuite/g++.dg/parse/namespace-alias-1.C
+++ b/gcc/testsuite/g++.dg/parse/namespace-alias-1.C
@@ -2,6 +2,6 @@
 
 namespace N
 {
-  namespace M = N;  // { dg-error "previous declaration" }
+  namespace M = N;  // { dg-message "previous declaration" }
   namespace M {}    // { dg-error "declaration of namespace" }
 }
diff --git a/gcc/testsuite/g++.dg/parse/namespace10.C b/gcc/testsuite/g++.dg/parse/namespace10.C
index 9f93d1b..5e9541a 100644
--- a/gcc/testsuite/g++.dg/parse/namespace10.C
+++ b/gcc/testsuite/g++.dg/parse/namespace10.C
@@ -1,6 +1,6 @@
 // PR c++/16529
 
-namespace m {} // { dg-error "" }
+namespace m {} // { dg-message "" }
 
 namespace n {
   namespace m {}
diff --git a/gcc/testsuite/g++.dg/parse/redef2.C b/gcc/testsuite/g++.dg/parse/redef2.C
index 3ab3667..85c5064 100644
--- a/gcc/testsuite/g++.dg/parse/redef2.C
+++ b/gcc/testsuite/g++.dg/parse/redef2.C
@@ -1,6 +1,6 @@
 // { dg-do compile }
 
-char * d [10];  // { dg-message "8: 'd' has a previous declaration as" }
+char * d [10];  // { dg-message "8: previous declaration as" }
 char e [15][10];
 int (*f)();
 
diff --git a/gcc/testsuite/g++.dg/template/friend44.C b/gcc/testsuite/g++.dg/template/friend44.C
index 814fec1..6ff4db3 100644
--- a/gcc/testsuite/g++.dg/template/friend44.C
+++ b/gcc/testsuite/g++.dg/template/friend44.C
@@ -3,7 +3,7 @@
 
 template<int> struct A
 {
-  friend int foo(); // { dg-error "14:new declaration" }
+  friend int foo(); // { dg-error "14:ambiguating new declaration" }
 };
 
-void foo() { A<0> a; } // { dg-error "6:ambiguates old declaration" } 
+void foo() { A<0> a; } // { dg-message "6:old declaration" } 
diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/crash42.C b/gcc/testsuite/g++.old-deja/g++.brendan/crash42.C
index 8777ef8..4b34a52 100644
--- a/gcc/testsuite/g++.old-deja/g++.brendan/crash42.C
+++ b/gcc/testsuite/g++.old-deja/g++.brendan/crash42.C
@@ -1,6 +1,6 @@
 // { dg-do assemble  }
 // GROUPS passed old-abort
-int fn();// { dg-error "" }  ambiguates.*
+int fn();// { dg-message "" }  ambiguates.*
 int x;
 int& fn() {// { dg-error "" }  new decl.*
 return x;}
diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/crash52.C b/gcc/testsuite/g++.old-deja/g++.brendan/crash52.C
index 6db818a..1318ea6 100644
--- a/gcc/testsuite/g++.old-deja/g++.brendan/crash52.C
+++ b/gcc/testsuite/g++.old-deja/g++.brendan/crash52.C
@@ -5,9 +5,9 @@
 
 class A {
 public:
-  friend A f(A &a);// { dg-error "ambiguates" }
+  friend A f(A &a);// { dg-message "old declaration" }
 };
 
-A &f(A &a) {// { dg-error "new decl" }
+A &f(A &a) {// { dg-error "new declaration" }
   std::cout << "Blah\n";
 } // { dg-warning "no return statement" }
diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/crash55.C b/gcc/testsuite/g++.old-deja/g++.brendan/crash55.C
index 8295962..3faa538 100644
--- a/gcc/testsuite/g++.old-deja/g++.brendan/crash55.C
+++ b/gcc/testsuite/g++.old-deja/g++.brendan/crash55.C
@@ -1,6 +1,6 @@
 // { dg-do compile }
 // GROUPS passed old-abort
-      extern int f(int); // { dg-error "ambiguates" }
+      extern int f(int); // { dg-message "old declaration" }
 
       int& f(int x)  // { dg-error "new declaration" }
       {
diff --git a/gcc/testsuite/g++.old-deja/g++.jason/overload21.C b/gcc/testsuite/g++.old-deja/g++.jason/overload21.C
index 229be93..7239793 100644
--- a/gcc/testsuite/g++.old-deja/g++.jason/overload21.C
+++ b/gcc/testsuite/g++.old-deja/g++.jason/overload21.C
@@ -1,7 +1,7 @@
 // { dg-do assemble  }
 struct X {
   void f (int = 4, char = 'r');	// { dg-error "previous specification" } 
-  void g (int = 4, char = 'r');	// { dg-error "previous specification" } 
+  void g (int = 4, char = 'r');	// { dg-message "previous specification" } 
 };
 
 void
diff --git a/gcc/testsuite/g++.old-deja/g++.jason/overload5.C b/gcc/testsuite/g++.old-deja/g++.jason/overload5.C
index 9280c9d..c1d53f3 100644
--- a/gcc/testsuite/g++.old-deja/g++.jason/overload5.C
+++ b/gcc/testsuite/g++.old-deja/g++.jason/overload5.C
@@ -1,5 +1,5 @@
 // { dg-do assemble  }
 // Testcase for simple overloading resolution.
 
-int foo ();			// { dg-error "" } 
+int foo ();			// { dg-message "" } 
 void foo ();			// { dg-error "" } disallowed overload
diff --git a/gcc/testsuite/g++.old-deja/g++.jason/redecl1.C b/gcc/testsuite/g++.old-deja/g++.jason/redecl1.C
index 6fda9d2..172a441 100644
--- a/gcc/testsuite/g++.old-deja/g++.jason/redecl1.C
+++ b/gcc/testsuite/g++.old-deja/g++.jason/redecl1.C
@@ -3,7 +3,7 @@ class A
 {
 public:
     A (const A& ccref);
-    friend A const re (const A& v1); // { dg-error "ambiguates" } 
+    friend A const re (const A& v1); // { dg-message "old declaration" } 
 };
 
 A // const
diff --git a/gcc/testsuite/g++.old-deja/g++.law/arm8.C b/gcc/testsuite/g++.old-deja/g++.law/arm8.C
index 8b82af9..dfc3b30 100644
--- a/gcc/testsuite/g++.old-deja/g++.law/arm8.C
+++ b/gcc/testsuite/g++.old-deja/g++.law/arm8.C
@@ -7,7 +7,7 @@
 // Date: Tue, 16 Mar 93 12:05:24 +0100
 
 struct K {
-      void f( int *p  = 0); // { dg-error "" } previous specification
+      void f( int *p  = 0); // { dg-message "" } previous specification
 };
 
 extern int * q;
diff --git a/gcc/testsuite/g++.old-deja/g++.other/main1.C b/gcc/testsuite/g++.old-deja/g++.other/main1.C
index c5cfe8b..de689f6 100644
--- a/gcc/testsuite/g++.old-deja/g++.other/main1.C
+++ b/gcc/testsuite/g++.old-deja/g++.other/main1.C
@@ -1,12 +1,12 @@
 // { dg-do compile }
 
-int main()  // { dg-error "previous declaration" }
+int main()  // { dg-message "previous declaration" }
 {
   return 0;
 }
 
 
-int main(int, const char**) // { dg-error "conflicts" }
+int main(int, const char**) // { dg-error "conflicting" }
 {
   return 0;
 }