007-01-29 Manuel Lopez-Ibanez <manu@gcc.gnu.org>

	* c-decl.c (pop_scope): Replace warnings with call to
	warn_for_unused_label.
	* c-common.h (warn_for_unused_label): Declare.
	* c-common.c (warn_for_unused_label): Define.
cp/
	* decl.c (pop_label): Replace warning with call to
	warn_for_unused_label.

From-SVN: r121310

gcc/ChangeLog

+007-01-29  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
+
+	* c-decl.c (pop_scope): Replace warnings with call to
+	warn_for_unused_label.
+	* c-common.h (warn_for_unused_label): Declare.
+	* c-common.c (warn_for_unused_label): Define.
+
 2007-01-29  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
 
 	* tree-optimize.c (update_inlined_to_pointers): Delete unused

gcc/c-common.c

@@ -6758,5 +6758,18 @@ warn_about_parentheses (enum tree_code code, enum tree_code code_left,
 	     "have their mathematical meaning");
 }
 
+/* If LABEL (a LABEL_DECL) has not been used, issue a warning.  */
+
+void
+warn_for_unused_label (tree label)
+{
+  if (!TREE_USED (label))
+    {
+      if (DECL_INITIAL (label))
+	warning (OPT_Wunused_label, "label %q+D defined but not used", label);
+      else
+        warning (OPT_Wunused_label, "label %q+D declared but not defined", label);
+    }
+}
 
 #include "gt-c-common.h"

gcc/c-common.h

@@ -868,6 +868,7 @@ extern tree builtin_type_for_size (int, bool);
 extern void warn_array_subscript_with_type_char (tree);
 extern void warn_about_parentheses (enum tree_code, enum tree_code,
 				    enum tree_code);
+extern void warn_for_unused_label (tree label);
 
 
 /* In c-gimplify.c  */

gcc/c-decl.c

@@ -761,13 +761,9 @@ pop_scope (void)
 	      error ("label %q+D used but not defined", p);
 	      DECL_INITIAL (p) = error_mark_node;
 	    }
-	  else if (!TREE_USED (p) && warn_unused_label)
-	    {
-	      if (DECL_INITIAL (p))
-		warning (0, "label %q+D defined but not used", p);
-	      else
-		warning (0, "label %q+D declared but not defined", p);
-	    }
+	  else 
+	    warn_for_unused_label (p);
+
 	  /* Labels go in BLOCK_VARS.  */
 	  TREE_CHAIN (p) = BLOCK_VARS (block);
 	  BLOCK_VARS (block) = p;

gcc/cp/ChangeLog

+2007-01-29  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
+
+	* decl.c (pop_label): Replace warning with call to
+	warn_for_unused_label.
+
 2007-01-28  Andrew Pinski  <pinskia@gmail.com>
 
 	PR C++/28988

gcc/cp/decl.c

@@ -365,8 +365,8 @@ pop_label (tree label, tree old_value)
 	  /* Avoid crashing later.  */
 	  define_label (location, DECL_NAME (label));
 	}
-      else if (!TREE_USED (label))
-	warning (OPT_Wunused_label, "label %q+D defined but not used", label);
+      else 
+	warn_for_unused_label (label);
     }
 
   SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label), old_value);