1 files changed, 32 insertions, 0 deletions
diff --git a/clang/test/CodeGen/callback_pthread_create.c b/clang/test/CodeGen/callback_pthread_create.c
new file mode 100644
index 00000000000..d751e8abb3f
--- /dev/null
+++ b/clang/test/CodeGen/callback_pthread_create.c
@@ -0,0 +1,32 @@
+// RUN: %clang -O1 %s -S -c -emit-llvm -o - | FileCheck %s
+// RUN: %clang -O1 %s -S -c -emit-llvm -o - | opt -ipconstprop -S | FileCheck --check-prefix=IPCP %s
+
+// CHECK: declare !callback ![[cid:[0-9]+]] dso_local i32 @pthread_create
+// CHECK: ![[cid]] = !{![[cidb:[0-9]+]]}
+// CHECK: ![[cidb]] = !{i64 2, i64 3, i1 false}
+
+#include <pthread.h>
+
+const int GlobalVar = 0;
+
+static void *callee0(void *payload) {
+// IPCP:      define internal i8* @callee0
+// IPCP-NEXT:   entry:
+// IPCP-NEXT:     ret i8* null
+  return payload;
+}
+
+static void *callee1(void *payload) {
+// IPCP:      define internal i8* @callee1
+// IPCP-NEXT:   entry:
+// IPCP-NEXT:     ret i8* bitcast (i32* @GlobalVar to i8*)
+  return payload;
+}
+
+void foo() {
+  pthread_t MyFirstThread;
+  pthread_create(&MyFirstThread, NULL, callee0, NULL);
+
+  pthread_t MySecondThread;
+  pthread_create(&MySecondThread, NULL, callee1, (void *)&GlobalVar);
+}