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net: don't set netGo = true on Windows with no cgo

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Windows can call the C DNS lookup routines even without cgo,
so don't force it to use the Go routines in that scenario.

No test because the test requires building the tools with CGO_ENABLED=0.

For #33097
Fixes #53490

Change-Id: I3595a68e788be0d3bbd1bbd431836aca20a7d757
Reviewed-on: https://go-review.googlesource.com/c/go/+/413458
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
This commit is contained in:
Ian Lance Taylor 2022-06-21 15:17:22 -07:00 committed by Gopher Robot
parent be0b2a393a
commit 92c9b81447
2 changed files with 5 additions and 3 deletions
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2
src/net/cgo_stub.go
View File

@ -8,8 +8,6 @@ package net
import "context"
func init() { netGo = true }
type addrinfoErrno int
func (eai addrinfoErrno) Error() string { return "<nil>" }

6
src/net/netgo.go
View File

@ -2,7 +2,11 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build netgo
// Default netGo to true if the netgo build tag is being used, or the
// C library DNS routines are not available. Note that the C library
// routines are always available on Windows.
//go:build netgo || (!cgo && !windows)
package net