objc-act.c (build_selector_translation_table): Issue warning...

        * objc/objc-act.c (build_selector_translation_table): Issue
	warning, when  -Wselector is used,if method for which selector
	is being created does not exist.

Testsuite:
	*objc.dg/selector-1.m: New test

From-SVN: r56142

gcc/ChangeLog

+2002-08-08  Devang Patel  <dpatel@apple.com>
+	* objc/objc-act.c (build_selector_translation_table): Issue warning, 
+	when  -Wselector is used,if method for which selector is being 
+	created does not exist.
+	
 2002-08-08  Stephen Clarke <stephen.clarke@superh.com>
 
 	* config/sh/sh.c (prepare_move_operands): Only call

gcc/objc/objc-act.c

@@ -1886,6 +1886,32 @@ build_selector_translation_table ()
     {
       tree expr;
 
+      if (warn_selector && objc_implementation_context)
+      {
+        tree method_chain;
+        bool found = false;
+        for (method_chain = meth_var_names_chain;
+             method_chain;
+             method_chain = TREE_CHAIN (method_chain))
+          {
+            if (TREE_VALUE (method_chain) == TREE_VALUE (chain))
+              {
+                found = true;
+                break;
+              }
+          }
+        if (!found)
+          {
+            /* Adjust line number for warning message.  */
+            int save_lineno = lineno;
+            if (flag_next_runtime && TREE_PURPOSE (chain))
+              lineno = DECL_SOURCE_LINE (TREE_PURPOSE (chain));
+            warning ("creating selector for non existant method %s",
+                     IDENTIFIER_POINTER (TREE_VALUE (chain)));
+            lineno = save_lineno;
+          }
+      }
+
       expr = build_selector (TREE_VALUE (chain));
 
       if (flag_next_runtime)

gcc/testsuite/ChangeLog

+2002-08-08  Devang Patel  <dpatel@apple.com>
+	*objc.dg/selector-1.m : New test
+	
 2002-08-08  Nathan Sidwell  <nathan@codesourcery.com>
 
 	* g++.dg/abi/bitfield4.c: New test.

gcc/testsuite/objc.dg/selector-1.m

+/* Test warning for non existing selectors.  */
+/* Contributed by Devang Patel <dpatel@apple.com>.  */
+/* { dg-options "-Wselector -fnext-runtime" } */
+/* { dg-do compile } */
+
+typedef struct objc_object { struct objc_class *class_pointer; } *id;
+typedef struct objc_selector    *SEL;
+
+@interface Foo
+- (void) foo;
+- (void) bar;
+@end
+
+@implementation Foo
+- (void) bar
+{
+}
+
+- (void) foo
+{
+  SEL a,b,c;
+  a = @selector(b1ar); /* { dg-warning "creating selector for non existant method b1ar" } */
+  b = @selector(bar);
+}
+@end
+