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+; RUN: llvm-as < %s | llc -march=x86 | grep weak | count 2
+@__gthrw_pthread_once = alias weak i32 (i32*, void ()*)* @pthread_once ; <i32 (i32*, void ()*)*> [#uses=0]
+
+declare extern_weak i32 @pthread_once(i32*, void ()*)