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Subject[PATCH] Coccinelle: noderef: Add a rule and correct the old rule
Date
Add a new rule to detect the cases where sizeof is used as a
subexpression rather than a top level argument.

Also, for the patch mode third rule should behave same as
second rule with arguments reversed. So, change that as well.

Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
---
scripts/coccinelle/misc/noderef.cocci | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/scripts/coccinelle/misc/noderef.cocci b/scripts/coccinelle/misc/noderef.cocci
index 80a831c..9991ee9 100644
--- a/scripts/coccinelle/misc/noderef.cocci
+++ b/scripts/coccinelle/misc/noderef.cocci
@@ -16,6 +16,7 @@ virtual patch
@depends on patch@
expression *x;
expression f;
+identifier i;
type T;
@@

@@ -30,7 +31,12 @@ f(...,(T)(x),...,sizeof(
+ *x
),...)
|
-f(...,sizeof(x),...,(T)(
+f(...,sizeof(
+- x
++ *x
+ ),...,(T)(x),...)
+|
+x = f(...,i*sizeof(
- x
+ *x
),...)
@@ -39,6 +45,7 @@ f(...,sizeof(x),...,(T)(
@r depends on !patch@
expression *x;
expression f;
+identifier i;
position p;
type T;
@@
@@ -49,6 +56,8 @@ type T;
*f(...,(T)(x),...,sizeof@p(x),...)
|
*f(...,sizeof@p(x),...,(T)(x),...)
+|
+*x = f(...,i*sizeof@p(x),...)
)

@script:python depends on org@
--
2.1.4
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