56 lines
900 B
Plaintext
56 lines
900 B
Plaintext
|
/// Check for constants that are added but are used elsewhere as bitmasks
|
||
|
|
/// The results should be checked manually to ensure that the nonzero
|
||
|
|
/// bits in the two constants are actually disjoint.
|
||
|
|
///
|
||
|
|
// Confidence: Moderate
|
||
|
|
// Copyright: (C) 2013 Julia Lawall, INRIA/LIP6. GPLv2.
|
||
|
|
// Copyright: (C) 2013 Gilles Muller, INRIA/LIP6. GPLv2.
|
||
|
|
// URL: http://coccinelle.lip6.fr/
|
||
|
|
// Comments:
|
||
|
|
// Options: --no-includes --include-headers
|
||
|
|
|
||
|
|
virtual org
|
||
|
|
virtual report
|
||
|
|
virtual context
|
||
|
|
|
||
|
|
@r@
|
||
|
|
constant c;
|
||
|
|
identifier i;
|
||
|
|
expression e;
|
||
|
|
@@
|
||
|
|
|
||
|
|
(
|
||
|
|
e | c@i
|
||
|
|
|
|
||
|
|
e & c@i
|
||
|
|
|
|
||
|
|
e |= c@i
|
||
|
|
|
|
||
|
|
e &= c@i
|
||
|
|
)
|
||
|
|
|
||
|
|
@s@
|
||
|
|
constant r.c,c1;
|
||
|
|
identifier i1;
|
||
|
|
position p;
|
||
|
|
@@
|
||
|
|
|
||
|
|
(
|
||
|
|
c1 + c - 1
|
||
|
|
|
|
||
|
|
*c1@i1 +@p c
|
||
|
|
)
|
||
|
|
|
||
|
|
@script:python depends on org@
|
||
|
|
p << s.p;
|
||
|
|
@@
|
||
|
|
|
||
|
|
cocci.print_main("sum of probable bitmasks, consider |",p)
|
||
|
|
|
||
|
|
@script:python depends on report@
|
||
|
|
p << s.p;
|
||
|
|
@@
|
||
|
|
|
||
|
|
msg = "WARNING: sum of probable bitmasks, consider |"
|
||
|
|
coccilib.report.print_report(p[0],msg)
|