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/// Remove casting the values returned by memory allocation functions
/// like XMALLOC and XCALLOC.
///
// This makes an effort to find cases of casting of values returned by #
// XMALLOC and XCALLOC and removes the casting as it is not required. The
// result in the patch case may need some reformatting.
//
// Confidence: High
// Copyright: (C) 2014 Himangi Saraogi GPLv2.
// Copyright: (C) 2017 Himanshu Jha GPLv2.
// Copyright: (C) 2019 Quentin Young GPLv2.
// Comments:
// Options: --no-includes --include-headers
//
virtual context
virtual patch
virtual org
virtual report
@initialize:python@
@@
import re
pattern = '__'
m = re.compile(pattern)
@r1 depends on context || patch@
type T;
@@
(T *)
\(XMALLOC\|XCALLOC\)(...)
//----------------------------------------------------------
// For context mode
//----------------------------------------------------------
@script:python depends on context@
t << r1.T;
@@
if m.search(t) != None:
cocci.include_match(False)
@depends on context && r1@
type r1.T;
@@
* (T *)
\(XMALLOC\|XCALLOC\)(...)
//----------------------------------------------------------
// For patch mode
//----------------------------------------------------------
@script:python depends on patch@
t << r1.T;
@@
if m.search(t) != None:
cocci.include_match(False)
@depends on patch && r1@
type r1.T;
@@
- (T *)
\(XMALLOC\|XCALLOC\)(...)
//----------------------------------------------------------
// For org and report mode
//----------------------------------------------------------
@r2 depends on org || report@
type T;
position p;
@@
(T@p *)
\(XMALLOC\|XCALLOC\)(...)
@script:python depends on org@
p << r2.p;
t << r2.T;
@@
if m.search(t) != None:
cocci.include_match(False)
else:
coccilib.org.print_safe_todo(p[0], t)
@script:python depends on report@
p << r2.p;
t << r2.T;
@@
if m.search(t) != None:
cocci.include_match(False)
else:
msg="WARNING: casting value returned by memory allocation function to (%s *) is useless." % (t)
coccilib.report.print_report(p[0], msg)
|
