add testcases for exotic enum values

There is more than one complexity in the evaluation of enums.

Add a test for enums with 'exotic' values not covered in other tests.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/validation/enum-type-exotic.c b/validation/enum-type-exotic.c
new file mode 100644
index 00000000..a17ca0ad
--- /dev/null
+++ b/validation/enum-type-exotic.c
@@ -0,0 +1,28 @@
+enum foobar {
+        C = (unsigned char)0,
+        L = 1L,
+};
+
+unsigned int foo(void);
+unsigned int foo(void)
+{
+#ifdef __CHECKER__
+	_Static_assert([typeof(C)] == [enum foobar], "enum type");
+	_Static_assert([typeof(C)] != [unsigned char], "char type");
+#endif
+
+	typeof(C) v = ~0;
+	return v;
+}
+
+/*
+ * check-name: enum-type-exotic
+ * check-description:
+ *	GCC type's for C is 'int' or maybe 'unsigned int'
+ *	but certainly not 'unsigned char' like here.
+ * check-command: test-linearize -Wno-decl $file
+ * check-known-to-fail
+ *
+ * check-output-ignore
+ * check-output-excludes: ret\\.32 *\\$255
+ */