1 files changed, 24 insertions, 0 deletions
diff --git a/test/CodeGenCXX/builtin-constant-p.cpp b/test/CodeGenCXX/builtin-constant-p.cpp
new file mode 100644
index 000000000000..6d853e8a6828
--- /dev/null
+++ b/test/CodeGenCXX/builtin-constant-p.cpp
@@ -0,0 +1,24 @@
+// RUN: %clang_cc1 -triple=x86_64-linux-gnu -emit-llvm -o - %s
+
+// Don't crash if the argument to __builtin_constant_p isn't scalar.
+template <typename T>
+constexpr bool is_constant(const T v) {
+  return __builtin_constant_p(v);
+}
+
+template <typename T>
+class numeric {
+ public:
+  using type = T;
+
+  template <typename S>
+  constexpr numeric(S value)
+      : value_(static_cast<T>(value)) {}
+
+ private:
+  const T value_;
+};
+
+bool bcp() {
+  return is_constant(numeric<int>(1));
+}