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feat: add rule for deprecated rand.Seed in Go 1.20 #57

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feat: add rule for deprecated rand.Seed in Go 1.20 #57

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7 changes: 7 additions & 0 deletions ruleguard.rules.go
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Original file line number Diff line number Diff line change
Expand Up @@ -560,3 +560,10 @@ func ioStringWriterWriteStringMisuse(m dsl.Matcher) {
Report(`Use Write when writing a []byte to an io.Writer`).
Suggest(`$w.Write($b)`)
}

func randSeed(m dsl.Matcher) {
m.Match(
`rand.Seed($s)`,
).Report(`As of Go 1.20, the math.Seed func is deprecated as programs should not use the global default source.`).
Suggest(`rand.New(rand.NewSource($s))`)
}