linux-kernel - [PATCH 2/3 RFC] Coccinelle: check for incorrect DECLARE

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Date:	Fri,  2 Jan 2015 04:59:11 -0500
From:	Nicholas Mc Guire <der.herr@...r.at>
To:	Julia Lawall <Julia.Lawall@...6.fr>
Cc:	Gilles Muller <Gilles.Muller@...6.fr>,
	Nicolas Palix <nicolas.palix@...g.fr>,
	Michal Marek <mmarek@...e.cz>,
	Andreas Platschek <platschek@....tuwien.ac.at>,
	cocci@...teme.lip6.fr, linux-kernel@...r.kernel.org,
	Nicholas Mc Guire <der.herr@...r.at>
Subject: [PATCH 2/3 RFC] Coccinelle: check for incorrect DECLARE_COMPLETION use

Reviewed-by: Andreas Platschek <platschek@....tuwien.ac.at>
Signed-off-by: Nicholas Mc Guire <der.herr@...r.at>
---
 .../coccinelle/api/false_declare_completion.cocci  |   50 ++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 scripts/coccinelle/api/false_declare_completion.cocci

diff --git a/scripts/coccinelle/api/false_declare_completion.cocci b/scripts/coccinelle/api/false_declare_completion.cocci
new file mode 100644
index 0000000..a0e3d6c
--- /dev/null
+++ b/scripts/coccinelle/api/false_declare_completion.cocci
@@ -0,0 +1,50 @@
+/* check for incorrect DECLARE_COMPLETION use within a function
+ *
+ * Options:  --no-includes --include-headers
+ */
+virtual context
+virtual patch
+virtual org
+virtual report
+
+/* flag incorrect initializer*/
+@e depends on patch && !(context || org || report)@
+expression cmp;
+identifier f;
+declarer name DECLARE_COMPLETION;
+position p;
+@@
+
+f(...) {
+  <...
+- DECLARE_COMPLETION@p(cmp);
++ DECLARE_COMPLETION_ONSTACK(cmp);
+  ...>
+}
+
+@ep depends on !patch && (context || org || report)@
+expression cmp;
+identifier f;
+position p;
+@@
+
+f(...) {
+  <...
+* DECLARE_COMPLETION@p(cmp);
+  ...>
+}
+
+@...ipt:python depends on org@
+p << ep.p;
+@@
+
+msg="WARNING: possible incorrect use of DECLARE_COMPLETION"
+coccilib.org.print_todo(p[0], msg)
+
+@...ipt:python depends on report@
+p << ep.p;
+@@
+
+msg="WARNING: possible incorrect use of DECLARE_COMPLETION"
+coccilib.report.print_report(p[0], msg)
+
-- 
1.7.10.4

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