1 files changed, 5 insertions, 0 deletions
diff --git a/test/regression/expr4.c b/test/regression/expr4.c
new file mode 100644
index 00000000..ad86eaed
--- /dev/null
+++ b/test/regression/expr4.c
@@ -0,0 +1,5 @@
+/* Warning, not error */
+
+#define NULL ((void *) 0)
+
+int f(int x) { return x == NULL; }