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diff --git a/test/FrontendC/extern-weak.c b/test/FrontendC/extern-weak.c
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+// RUN: %llvmgcc -O3 -S -o - -emit-llvm %s | grep extern_weak
+// RUN: %llvmgcc -O3 -S -o - -emit-llvm %s | llvm-as | llc
+
+#if !defined(__linux__) && !defined(__FreeBSD__) && \
+ !defined(__OpenBSD__) && !defined(__CYGWIN__)
+void foo() __attribute__((weak_import));
+#else
+void foo() __attribute__((weak));
+#endif
+
+void bar() { foo(); }
+