From a8c6c4837c17ab4ec3ba78e40b9a72dc70d9cf5a Mon Sep 17 00:00:00 2001 From: Ian Lance Taylor Date: Wed, 8 Jun 2016 21:09:09 -0700 Subject: [PATCH] os: document that the runtime can write to standard error Fixes #15970. Change-Id: I3f7d8316069a69d0e3859aaa96bc1414487fead0 Reviewed-on: https://go-review.googlesource.com/23921 Run-TryBot: Ian Lance Taylor TryBot-Result: Gobot Gobot Reviewed-by: Andrew Gerrand --- src/os/file.go | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/os/file.go b/src/os/file.go index 74d3c9f9631..e546441497b 100644 --- a/src/os/file.go +++ b/src/os/file.go @@ -46,6 +46,10 @@ func (f *File) Name() string { return f.name } // Stdin, Stdout, and Stderr are open Files pointing to the standard input, // standard output, and standard error file descriptors. +// +// Note that the Go runtime writes to standard error for panics and crashes; +// closing Stderr may cause those messages to go elsewhere, perhaps +// to a file opened later. var ( Stdin = NewFile(uintptr(syscall.Stdin), "/dev/stdin") Stdout = NewFile(uintptr(syscall.Stdout), "/dev/stdout")