diff --git a/test/CodeGenCXX/bool-bitfield.cpp b/test/CodeGenCXX/bool-bitfield.cpp
new file mode 100644
index 0000000..06bdf2b
--- /dev/null
+++ b/test/CodeGenCXX/bool-bitfield.cpp
@@ -0,0 +1,14 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -verify -emit-llvm -o - %s \
+// RUN:   | FileCheck %s
+
+// PR14638; make sure this doesn't crash.
+struct A {
+    bool m_sorted : 1;
+};
+void func1(bool b, A& a1)
+{
+    if ((a1.m_sorted = b)) {}
+}
+// CHECK: define void @_Z5func1bR1A
+// CHECK: br i1
+// CHECK: ret void