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net: only build cgo_stub.go on unix or wasip1

We were building it for Windows, although Windows code never calls
any of these functions. When using -tags netgo that cause a multiple
definition of cgoAvailable.

Fixes #61153

Change-Id: Ib9e1de7720a8c0dacd6f12002917bf305dfa5405
Reviewed-on: https://go-review.googlesource.com/c/go/+/507655
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
This commit is contained in:
Ian Lance Taylor 2023-07-03 05:05:55 -07:00 committed by Gopher Robot
parent 6305d7fdd3
commit 449ef3795d

View File

@ -3,13 +3,13 @@
// license that can be found in the LICENSE file.
// This file holds stub versions of the cgo functions called on Unix systems.
// We build this file if using the netgo build tag, or if cgo is not
// enabled and we are using a Unix system other than Darwin, or if it's
// wasip1 where cgo is never available.
// Darwin is exempted because it always provides the cgo routines,
// in cgo_unix_syscall.go.
// We build this file:
// - if using the netgo build tag on a Unix system
// - on a Unix system without the cgo resolver functions
// (Darwin always provides the cgo functions, in cgo_unix_syscall.go)
// - on wasip1, where cgo is never available
//go:build netgo || (!cgo && unix && !darwin) || wasip1
//go:build (netgo && unix) || (unix && !cgo && !darwin) || wasip1
package net