1 files changed, 9 insertions, 0 deletions
diff --git a/test/CodeGenCXX/builtins.cpp b/test/CodeGenCXX/builtins.cpp
new file mode 100644
index 0000000..0629c31
--- /dev/null
+++ b/test/CodeGenCXX/builtins.cpp
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s
+
+// PR8839
+extern "C" char memmove();
+
+int main() {
+  // CHECK: call signext i8 @memmove()
+  return memmove();
+}