Fix for PR objc/47073

[Nicola Pero]

This patch fixes PR objc/47073.  The (included) testcase crashes the  
compiler before the fix,
and produces the expected error messages after the fix.

Ok to commit ?

Thanks

Index: objc-act.c
===================================================================
--- objc-act.c  (revision 168278)
+++ objc-act.c  (working copy)
@@ -5965,8 +5965,9 @@ encode_method_prototype (tree method_dec
        /* If a type size is not known, bail out.  */
        if (sz < 0)
         {
-         error ("type %q+D does not have a known size",
-                type);
+         error_at (DECL_SOURCE_LOCATION (method_decl),
+                   "type %qT does not have a known size",
+                   type);
           /* Pretend that the encoding succeeded; the compilation will
              fail nevertheless.  */
           goto finish_encoding;
Index: ChangeLog
===================================================================
--- ChangeLog   (revision 168278)
+++ ChangeLog   (working copy)
@@ -1,3 +1,9 @@
+2010-12-28  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+       PR objc/47073
+       * objc-act.c (encode_method_prototype): Fixed both location and
+       format string of error "type %qT does not have a known size".
+
  2010-12-26  Nicola Pero  <nicola.pero@meta-innovation.com>

         * config-lang.in (gtfiles): Added c-family/c-cppbuiltin.c.
Index: testsuite/ChangeLog
===================================================================
--- testsuite/ChangeLog (revision 168278)
+++ testsuite/ChangeLog (working copy)
@@ -1,3 +1,8 @@
+2010-12-28  Nicola Pero  <nicola.pero@meta-innovation.com>
+
+       PR objc/47073
+       * objc.dg/incomplete-type-1.m: New test.
+
  2010-12-27  Jakub Jelinek  <jakub@redhat.com>

         PR c++/46626
Index: testsuite/objc.dg/incomplete-type-1.m
===================================================================
--- testsuite/objc.dg/incomplete-type-1.m       (revision 0)
+++ testsuite/objc.dg/incomplete-type-1.m       (revision 0)
@@ -0,0 +1,24 @@
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>,  
December 2010.  */
+/* { dg-do compile } */
+
+#include <objc/objc.h>
+
+enum type1;
+struct type2;
+
+@interface MyObject
+- (void) method1: (enum type1)argument;
+- (void) method2: (struct type2)argument;
+@end
+
+@implementation MyObject
+- (void) method1: (enum type1)argument { /* { dg-error "does not have  
a known size" } */
+  return;
+}
+- (void) method2: (struct type2)argument { /* { dg-error "does not  
have a known size" } */
+  return;
+}
+@end
+