tree b8ac2d1a7f02597afe0b60504cd4a3d62484cd55
parent 34f3ac5f165d50356d3a8940dc87b77e9b2b7fb9
author Bryan C. Mills <bcmills@google.com> 1656099385 -0400
committer Bryan Mills <bcmills@google.com> 1656444591 +0000

os/exec: on Windows, suppress ErrDot if the implicit path matches the explicit one

If the current directory is also listed explicitly in %PATH%,
this changes the behavior of LookPath to prefer the explicit name for it
(and thereby avoid ErrDot).

However, in order to avoid running a different executable from what
would have been run by previous Go versions, we still return the
implicit path (and ErrDot) if it refers to a different file entirely.

Fixes #53536.
Updates #43724.

Change-Id: I7ab01074e21a0e8b07a176e3bc6d3b8cf0c873cd
Reviewed-on: https://go-review.googlesource.com/c/go/+/414054
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>