251f3aa6ee
WaitDelay only handles writes to Stdin and reads from Stdout/Stderr. If Stdin is set to a blocking Reader, or Stdout/Stderr are set to a blocking Writer, Wait can hang indefinitely. I don't see any way to fix this with the current API, as there is no general way that the os/exec package can interrupt the blocking Read or Write. This CL documents the limitation and points people toward the workaround of using StdinPipe/StdoutPipe/StderrPipe and arranging for their own way to interrupt the blocking Read or Write. Fixes #77227 Change-Id: I3150ae7af89dccf8d859b41eb43eaf0bbbb55fee Reviewed-on: https://go-review.googlesource.com/c/go/+/739422 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Auto-Submit: Ian Lance Taylor <iant@golang.org> Reviewed-by: Sean Liao <sean@liao.dev> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Carlos Amedee <carlos@golang.org>
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