cppcheck/rules/strlen-empty-str.xml

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<?xml version="1.0"?>
<rule version="1">
<pattern> if \( ([!] )*?(strlen) \( \w+? \) ([>] [0] )*?\) { </pattern>
<message>
<id>StrlenEmptyString</id>
<severity>performance</severity>
<summary>Using strlen() to check if a string is empty is not efficient.</summary>
</message>
</rule>