1 files changed, 19 insertions, 0 deletions
diff --git a/validation/plain-char-compatibility.c b/validation/plain-char-compatibility.c
new file mode 100644
index 00000000..cdfe1a31
--- /dev/null
+++ b/validation/plain-char-compatibility.c
@@ -0,0 +1,19 @@
+static int sfoo(void)
+{
+	return __builtin_types_compatible_p(char, signed char);
+}
+
+static int ufoo(void)
+{
+	return __builtin_types_compatible_p(char, unsigned char);
+}
+
+/*
+ * check-name: plain-char-compatibility
+ * check-command: test-linearize $file
+ * check-known-to-fail
+ *
+ * check-output-ignore
+ * check-output-pattern(2): ret.*\\$0
+ * check-output-excludes: ret.*\\$1
+ */