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runtime: clarify GOROOT return value in documentation

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The current GOROOT documentation could indicate that changing the
environment variable at runtime would affect the return value of
GOROOT. This is false as the returned value is the one used for the
build. This CL aims to clarify the confusion.

Fixes #22302

Change-Id: Ib68c30567ac864f152d2da31f001a98531fc9757
Reviewed-on: https://go-review.googlesource.com/75751
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Gabriel Aszalos 2017-11-03 09:40:52 +01:00 committed by Russ Cox
parent 39de58bad7
commit d6ebbef89d
1 changed files with 2 additions and 2 deletions
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4
src/runtime/extern.go
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@ -212,8 +212,8 @@ func Callers(skip int, pc []uintptr) int {
return callers(skip, pc) return callers(skip, pc)
} }
// GOROOT returns the root of the Go tree. // GOROOT returns the root of the Go tree. It uses the
// It uses the GOROOT environment variable, if set, // GOROOT environment variable, if set at process start,
// or else the root used during the Go build. // or else the root used during the Go build.
func GOROOT() string { func GOROOT() string {
s := gogetenv("GOROOT") s := gogetenv("GOROOT")