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25af5f0d79
Add some Coccinelle semantic patches we can use to automatically refactor code in the future. Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
53 lines
1.3 KiB
Plaintext
53 lines
1.3 KiB
Plaintext
///
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/// Use zeroing allocator rather than allocator followed by memset with 0
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///
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/// This considers some simple cases that are common and easy to validate
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/// Note in particular that there are no ...s in the rule, so all of the
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/// matched code has to be contiguous
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///
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// Confidence: High
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// Copyright: (C) 2009-2010 Julia Lawall, Nicolas Palix, DIKU. GPLv2.
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// Copyright: (C) 2009-2010 Gilles Muller, INRIA/LiP6. GPLv2.
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// Copyright: (C) 2017 Himanshu Jha GPLv2.
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// Copyright: (C) 2019 Quentin Young. GPLv2.
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// URL: http://coccinelle.lip6.fr/rules/kzalloc.html
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// Options: --no-includes --include-headers
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//
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// Keywords: XMALLOC, XCALLOC
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// Version min: < 2.6.12 kmalloc
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// Version min: 2.6.14 kzalloc
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//
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virtual context
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virtual patch
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//----------------------------------------------------------
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// For context mode
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//----------------------------------------------------------
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@depends on context@
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type T, T2;
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expression x;
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expression E1;
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expression t;
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@@
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* x = (T)XMALLOC(t, E1);
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* memset((T2)x,0,E1);
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//----------------------------------------------------------
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// For patch mode
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//----------------------------------------------------------
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@depends on patch@
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type T, T2;
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expression x;
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expression E1;
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expression t;
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@@
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- x = (T)XMALLOC(t, E1);
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+ x = (T)XCALLOC(t, E1);
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- memset((T2)x,0,E1);
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