linux-kernel - [PATCH] scripts: coccinelle: boolinit: drop warnings on named constants

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Date:   Sat, 29 Dec 2018 07:14:16 +0100
From:   Julia Lawall <Julia.Lawall@...6.fr>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     kernel-janitors@...r.kernel.org,
        Gilles Muller <Gilles.Muller@...6.fr>,
        Nicolas Palix <nicolas.palix@...g.fr>,
        Michal Marek <michal.lkml@...kovi.net>, cocci@...teme.lip6.fr,
        linux-kernel@...r.kernel.org,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Subject: [PATCH] scripts: coccinelle: boolinit: drop warnings on named constants

Coccinelle doesn't always have access to the values of named
(#define) constants, and they may likely often be bound to true
and false values anyway, resulting in false positives.  So stop
warning about them.

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 scripts/coccinelle/misc/boolinit.cocci |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/scripts/coccinelle/misc/boolinit.cocci b/scripts/coccinelle/misc/boolinit.cocci
index b0584a3..aabb581 100644
--- a/scripts/coccinelle/misc/boolinit.cocci
+++ b/scripts/coccinelle/misc/boolinit.cocci
@@ -136,9 +136,14 @@ position p1;
 @r4 depends on !patch@
 bool b;
 position p2;
+identifier i;
 constant c != {0,1};
 @@
+(
+ b = i
+|
 *b@p2 = c
+)
 
 @script:python depends on org@
 p << r1.p;