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diff --git a/test/Sema/2009-03-09-WeakDeclarations-1.c b/test/Sema/2009-03-09-WeakDeclarations-1.c
new file mode 100644
index 000000000000..f219de6b848f
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+++ b/test/Sema/2009-03-09-WeakDeclarations-1.c
@@ -0,0 +1,16 @@
+// RUN: %clang_cc1 %s -triple i686-apple-darwin
+// Insist upon warnings for inappropriate weak attributes.
+
+// O.K.
+extern int ext_weak_import __attribute__ ((__weak_import__));
+
+// These are inappropriate, and should generate warnings:
+int decl_weak_import __attribute__ ((__weak_import__)); // expected-warning {'weak_import' attribute cannot be specified on a definition}
+int decl_initialized_weak_import __attribute__ ((__weak_import__)) = 13; // expected-warning {'weak_import' attribute cannot be specified on a definition}
+
+// O.K.
+extern int ext_f(void) __attribute__ ((__weak_import__));
+
+// These are inappropriate, and should generate warnings:
+int def_f(void) __attribute__ ((__weak_import__));
+int __attribute__ ((__weak_import__)) decl_f(void) {return 0;};