Fix a -pedantic spurious warning involving @dynamic.

llvm-svn: 101284
diff --git a/clang/test/SemaObjC/pedantic-dynamic-test.m b/clang/test/SemaObjC/pedantic-dynamic-test.m
new file mode 100644
index 0000000..9b14c1d
--- /dev/null
+++ b/clang/test/SemaObjC/pedantic-dynamic-test.m
@@ -0,0 +1,16 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s
+// rdar: // 7860960
+
+@interface I
+{
+  int window;
+}
+@property int window, noWarningNeeded;
+@end
+
+@implementation I
+
+@synthesize window;
+
+@dynamic noWarningNeeded;
+@end