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Make sure each call to NewRand is initialized with a unique seed #1787

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Nov 30, 2023
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Make sure each call to NewRand is initialized with a unique seed #1787

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7 changes: 6 additions & 1 deletion internal/util/rand/random.go
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Original file line number Diff line number Diff line change
Expand Up @@ -33,11 +33,16 @@ import (
"net"
"os"
"path/filepath"
"sync/atomic"
)

// seedGuard makes sure each call to NewRand is initialized with a unique seed.
var seedGuard atomic.Int64

// NewRand returns a new instance of rand.Rand with a fixed source.
func NewRand(seed int64) *rand.Rand {
return rand.New(rand.NewSource(seed))
seedGuard.Add(1)
return rand.New(rand.NewSource(seed + seedGuard.Load()))
}

// RandomInt returns a random integer between min and max.
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