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Diffstat (limited to 'tools/coccinelle/xcalloc-simple.cocci')
| -rw-r--r-- | tools/coccinelle/xcalloc-simple.cocci | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/tools/coccinelle/xcalloc-simple.cocci b/tools/coccinelle/xcalloc-simple.cocci new file mode 100644 index 0000000..5be4daf --- /dev/null +++ b/tools/coccinelle/xcalloc-simple.cocci @@ -0,0 +1,52 @@ +/// +/// Use zeroing allocator rather than allocator followed by memset with 0 +/// +/// This considers some simple cases that are common and easy to validate +/// Note in particular that there are no ...s in the rule, so all of the +/// matched code has to be contiguous +/// +// Confidence: High +// Copyright: (C) 2009-2010 Julia Lawall, Nicolas Palix, DIKU. GPLv2. +// Copyright: (C) 2009-2010 Gilles Muller, INRIA/LiP6. GPLv2. +// Copyright: (C) 2017 Himanshu Jha GPLv2. +// Copyright: (C) 2019 Quentin Young. GPLv2. +// URL: http://coccinelle.lip6.fr/rules/kzalloc.html +// Options: --no-includes --include-headers +// +// Keywords: XMALLOC, XCALLOC +// Version min: < 2.6.12 kmalloc +// Version min: 2.6.14 kzalloc +// + +virtual context +virtual patch + +//---------------------------------------------------------- +// For context mode +//---------------------------------------------------------- + +@depends on context@ +type T, T2; +expression x; +expression E1; +expression t; +@@ + +* x = (T)XMALLOC(t, E1); +* memset((T2)x,0,E1); + +//---------------------------------------------------------- +// For patch mode +//---------------------------------------------------------- + +@depends on patch@ +type T, T2; +expression x; +expression E1; +expression t; +@@ + +- x = (T)XMALLOC(t, E1); ++ x = (T)XCALLOC(t, E1); +- memset((T2)x,0,E1); + |