1 files changed, 12 insertions, 0 deletions
diff --git a/test/Misc/caret-diags-scratch-buffer.c b/test/Misc/caret-diags-scratch-buffer.c
new file mode 100644
index 0000000..e339d56
--- /dev/null
+++ b/test/Misc/caret-diags-scratch-buffer.c
@@ -0,0 +1,12 @@
+// RUN: clang-cc -fsyntax-only %s 2>&1 | not grep keyXXXX
+// This should not show keyXXXX in the caret diag output.  This once
+// happened because the two tokens ended up in the scratch buffer and
+// the caret diag from the scratch buffer included the previous token.
+#define M(name) \
+    if (name ## XXXX != name ## _sb);
+
+void foo() {
+  int keyXXXX;
+  M(key);
+}
+