6f2c7eed49
Unsigned expressions cannot be less than zero and presence of such practices very likely indicates a bug. Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
34 lines
851 B
Plaintext
34 lines
851 B
Plaintext
/// Unsigned expressions cannot be lesser than zero. Presence of
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/// comparisons 'unsigned (<|<=) 0' often indicates a bug,
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/// usually wrong type of variable.
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///
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// Confidence: High
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// Copyright: (C) 2015 Andrzej Hajda, Samsung Electronics Co., Ltd. GPLv2.
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// URL: http://coccinelle.lip6.fr/
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virtual org
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virtual report
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@r_cmp depends on !(file in "ext")@
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position p;
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typedef u8_t, u16_t, u32_t, u64_t;
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{unsigned char, unsigned short, unsigned int, unsigned long, unsigned long long,
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size_t, u8_t, u16_t, u32_t, u64_t} v;
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@@
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(\( v@p < 0 \| v@p <= 0 \))
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@script:python depends on org@
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p << r_cmp.p;
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@@
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msg = "WARNING: Unsigned expression compared with zero."
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coccilib.org.print_todo(p[0], msg)
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@script:python depends on report@
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p << r_cmp.p;
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@@
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msg = "WARNING: Unsigned expression compared with zero."
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coccilib.report.print_report(p[0], msg)
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