[Linux-kernel-mentees] [PATCH 32/32] tests: Add test case to detect cast attributes

[Jaskaran Singh <jaskaransingh7654321@gmail.com>]

Add a test case to detect a cast attribute. The following cases are
covered for when a attribute is:

- Before the cast type.
- After the cast type.
- After the cast type and before the *.
- After the cast type and *.

Signed-off-by: Jaskaran Singh <jaskaransingh7654321@gmail.com>
---
 tests/detect_cast_attr.c     | 10 ++++++++++
 tests/detect_cast_attr.cocci | 11 +++++++++++
 tests/detect_cast_attr.res   | 10 ++++++++++
 3 files changed, 31 insertions(+)
 create mode 100644 tests/detect_cast_attr.c
 create mode 100644 tests/detect_cast_attr.cocci
 create mode 100644 tests/detect_cast_attr.res

diff --git a/tests/detect_cast_attr.c b/tests/detect_cast_attr.c
new file mode 100644
index 00000000..2458ef05
--- /dev/null
+++ b/tests/detect_cast_attr.c
@@ -0,0 +1,10 @@
+#define __cast_attr MACROANNOTATION
+
+int func()
+{
+	char *a = (int __cast_attr) x;
+	char *a = (__cast_attr int) x;
+	char *a = (int __cast_attr *) x;
+	char *a = (int *__cast_attr) x;
+	char *a = (int) x;
+}
diff --git a/tests/detect_cast_attr.cocci b/tests/detect_cast_attr.cocci
new file mode 100644
index 00000000..d626048f
--- /dev/null
+++ b/tests/detect_cast_attr.cocci
@@ -0,0 +1,11 @@
+@r0@
+type T;
+attribute name __cast_attr;
+identifier x;
+@@
+
+  (
+-	T
++	char *
+ 	__cast_attr
+  ) x
diff --git a/tests/detect_cast_attr.res b/tests/detect_cast_attr.res
new file mode 100644
index 00000000..2a273316
--- /dev/null
+++ b/tests/detect_cast_attr.res
@@ -0,0 +1,10 @@
+#define __cast_attr MACROANNOTATION
+
+int func()
+{
+	char *a = (char *__cast_attr) x;
+	char *a = (__cast_attr char *) x;
+	char *a = (char *__cast_attr) x;
+	char *a = (char *__cast_attr) x;
+	char *a = (int) x;
+}
-- 
2.21.1

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