1 files changed, 10 insertions, 0 deletions
diff --git a/test/CodeGen/mangle-ms-string-literals.c b/test/CodeGen/mangle-ms-string-literals.c
new file mode 100644
index 0000000000000..41dd78c1fa729
--- /dev/null
+++ b/test/CodeGen/mangle-ms-string-literals.c
@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -x c -emit-llvm %s -o - -triple=i386-pc-win32 | FileCheck %s
+// RUN: %clang_cc1 -x c -emit-llvm %s -o - -triple=x86_64-pc-win32 | FileCheck %s
+
+void crbug857442(int x) {
+  // Make sure to handle truncated or padded literals. The truncation is only valid in C.
+  struct {int x; char s[2]; } truncatedAscii = {x, "hello"};
+  // CHECK: "??_C@_01CONKJJHI@he@"
+  struct {int x; char s[16]; } paddedAscii = {x, "hello"};
+  // CHECK: "??_C@_0BA@EAAINDNC@hello?$AA?$AA?$AA?$AA?$AA?$AA?$AA?$AA?$AA?$AA?$AA@"
+}