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diff --git a/gcc/testsuite/obj-c++.dg/ivar-problem-1.mm b/gcc/testsuite/obj-c++.dg/ivar-problem-1.mm
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+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
+/* { dg-do compile } */
+
+/* This test checks what happens if there are 16 instance variables.
+   In that case, the class was not created correctly.  In this testcase,
+   we have two classes, one with 15 variables and one with 16.  Older
+   GCCs would generate a bogus warning for the second class but not 
+   for the first one.  This only happened for ObjC, but it's good to
+   test ObjC++ as well.  */
+
+#include <stdlib.h>
+#include <objc/objc.h>
+
+@interface MyRootClass1
+{
+  Class isa;
+  int v2;
+  int v3;
+  int v4;
+  int v5;
+  int v6;
+  int v7;
+  int v8;
+  int v9;
+  int v10;
+  int v11;
+  int v12;
+  int v13;
+  int v14;
+  int v15;
+}
+- (id) init;
+@end
+
+@implementation MyRootClass1
+- (id) init { return self; }
+@end
+
+
+@interface MyRootClass2
+{
+  Class isa;
+  int v2;
+  int v3;
+  int v4;
+  int v5;
+  int v6;
+  int v7;
+  int v8;
+  int v9;
+  int v10;
+  int v11;
+  int v12;
+  int v13;
+  int v14;
+  int v15;
+  /* Adding the 16th variable used to cause bogus warnings to be
+     generated.  */
+  int v16;
+}
+- (id) init;
+@end
+
+@implementation MyRootClass2
+- (id) init { return self; } /* This should not generate a bogus warning.  */
+@end