1 files changed, 41 insertions, 0 deletions
diff --git a/test/CodeGen/callback_pthread_create.c b/test/CodeGen/callback_pthread_create.c
new file mode 100644
index 0000000000..785440030b
--- /dev/null
+++ b/test/CodeGen/callback_pthread_create.c
@@ -0,0 +1,41 @@
+// RUN: %clang_cc1 -O1 %s -S -emit-llvm -o - | FileCheck %s
+// RUN: %clang_cc1 -O1 %s -S -emit-llvm -o - | opt -ipconstprop -S | FileCheck --check-prefix=IPCP %s
+
+// CHECK: declare !callback ![[cid:[0-9]+]] {{.*}}i32 @pthread_create
+// CHECK: ![[cid]] = !{![[cidb:[0-9]+]]}
+// CHECK: ![[cidb]] = !{i64 2, i64 3, i1 false}
+
+// Taken from test/Analysis/retain-release.m
+//{
+struct _opaque_pthread_t {};
+struct _opaque_pthread_attr_t {};
+typedef struct _opaque_pthread_t *__darwin_pthread_t;
+typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t;
+typedef __darwin_pthread_t pthread_t;
+typedef __darwin_pthread_attr_t pthread_attr_t;
+
+int pthread_create(pthread_t *, const pthread_attr_t *,
+                   void *(*)(void *), void *);
+//}
+
+const int GlobalVar = 0;
+
+static void *callee0(void *payload) {
+// IPCP:      define internal i8* @callee0
+// IPCP:        ret i8* null
+  return payload;
+}
+
+static void *callee1(void *payload) {
+// IPCP:      define internal i8* @callee1
+// IPCP:        ret i8* bitcast (i32* @GlobalVar to i8*)
+  return payload;
+}
+
+void foo() {
+  pthread_t MyFirstThread;
+  pthread_create(&MyFirstThread, 0, callee0, 0);
+
+  pthread_t MySecondThread;
+  pthread_create(&MySecondThread, 0, callee1, (void *)&GlobalVar);
+}