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Add note about ReDoS to README

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Elara 2022-05-30 13:55:50 -07:00
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README.md
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@ -6,6 +6,12 @@ This package provides a CGo-free port of the PCRE2 regular expression library. T
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## IMPORTANT NOTE!
Due to the use of PCRE2, this library contains extra features such as lookaheads/lookbehinds. The stdlib regex engine, RE2, left these features out for a reason. It's easy to create regular expressions with this library that have exponential runtime. This creates the possibility of a denial of service attack. Only use this library if the extra features are needed and the user providing the regex is trusted (such as if it's in a config file). Otherwise, use the standard library regexp package.
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## Supported GOOS/GOARCH:
- linux/amd64