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From: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
To: linux-sparse@vger.kernel.org
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Subject: [PATCH 3/4] add testcase for missing warning for assignment to const
Date: Fri, 10 Jul 2020 02:13:21 +0200
Message-ID: <20200710001322.18391-4-luc.vanoostenryck@gmail.com> (raw)
In-Reply-To: <20200710001322.18391-1-luc.vanoostenryck@gmail.com>

The problem is seems to be related with evaluate_dereference()
where all mods are dropped when the type is a node.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
---
 validation/eval/array-quals-node.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 validation/eval/array-quals-node.c

diff --git a/validation/eval/array-quals-node.c b/validation/eval/array-quals-node.c
new file mode 100644
index 000000000000..99a4db13e4da
--- /dev/null
+++ b/validation/eval/array-quals-node.c
@@ -0,0 +1,29 @@
+struct s {
+	int a;
+	int b[3];
+	int c[2][3];
+};
+
+struct c {
+	const struct s s;
+};
+
+extern struct c v;
+
+void f(void)
+{
+	  v.s.a = 0;
+	 *v.s.b = 0;
+	**v.s.c = 0;
+}
+
+/*
+ * check-name: array-quals-node
+ * check-known-to-fail
+ *
+ * check-error-start
+eval/array-quals-node.c:15:14: error: assignment to const expression
+eval/array-quals-node.c:16:14: error: assignment to const expression
+eval/array-quals-node.c:17:14: error: assignment to const expression
+ * check-error-end
+ */
-- 
2.27.0


  parent reply index

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-10  0:13 [PATCH 0/4] fix evaluation of assignment and qualified arrays Luc Van Oostenryck
2020-07-10  0:13 ` [PATCH 1/4] add a testcase for assignment to const <type> (*)[] Luc Van Oostenryck
2020-07-10  0:13 ` [PATCH 2/4] add another testcase with const array/pointer Luc Van Oostenryck
2020-07-10  0:13 ` Luc Van Oostenryck [this message]
2020-07-10  0:13 ` [PATCH 4/4] [RFC] fix evaluation error with assignment of qualified arrays Luc Van Oostenryck

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