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math/rand: clarify Seed deprecation note 

Fixes #59331

Change-Id: I62156be2f2758c59349c3b02db6cf9140429c9e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/481915
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Bypass: Ian Lance Taylor <iant@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Ian Lance Taylor 2023-04-03 18:41:54 -07:00 committed by Ian Lance Taylor
parent d0099eff5e
commit 6d2cac12db
1 changed files with 4 additions and 6 deletions
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10
src/math/rand/rand.go
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@ -387,12 +387,10 @@ func (fs *fastSource) read(p []byte, readVal *int64, readPos *int8) (n int, err
// Alternately, set GODEBUG=randautoseed=0 in the environment
// before making any calls to functions in this package.
//
// Deprecated: Programs that call Seed and then expect a specific sequence
// of results from the global random source (using functions such as Int)
// can be broken when a dependency changes how much it consumes
// from the global random source. To avoid such breakages, programs
// that need a specific result sequence should use New(NewSource(seed))
// to obtain a random generator that other packages cannot access.
// Deprecated: As of Go 1.20 there is no reason to call Seed with
// a random value. Programs that call Seed with a known value to get
// a specific sequence of results should use New(NewSource(seed)) to
// obtain a local random generator.
func Seed(seed int64) {
orig := globalRandGenerator.Load()