52 lines
528 B
Plaintext
52 lines
528 B
Plaintext
// A pointer should not be compared to zero
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//
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// Confidence: High
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// Copyright: (C) Gilles Muller, Julia Lawall, EMN, INRIA, DIKU. GPLv2.
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// URL: https://coccinelle.gitlabpages.inria.fr/website/rules/badzero.html
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// Options:
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@ disable is_zero,isnt_zero @
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expression *E;
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expression E1,f;
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@@
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E = f(...)
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<...
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(
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- E == 0
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+ !E
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- E != 0
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+ E
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- 0 == E
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+ !E
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- 0 != E
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+ E
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)
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...>
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?E = E1
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@ disable is_zero,isnt_zero @
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expression *E;
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@@
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(
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E ==
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- 0
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+ NULL
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E !=
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- 0
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+ NULL
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- 0
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+ NULL
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== E
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- 0
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+ NULL
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!= E
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)
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