tree 123b551fe378c4fed5f3a04c41324424a6fe9ce8
parent 98d2717499575afe13d9f815d46fcd6e384efb0c
author Yasser Abdolmaleki <yasser@yasser.ca> 1564112646 -0700
committer Rob Pike <r@golang.org> 1579400754 +0000

net: document *OpError.Err must not be nil

The point of *net.OpError is to add details to an underlying lower
level error. It makes no sense to have an OpError without an Err and
a nil *OpError.Err will cause *OpError.Error() method to panic.

Fixes #33007

Change-Id: If4fb2501e02dad110a095b73e18c47312ffa6015
Reviewed-on: https://go-review.googlesource.com/c/go/+/187677
Reviewed-by: Rob Pike <r@golang.org>