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go/misc/cgo/test/issue29563.go

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cmd/link: permit duplicate weak symbols Permit weak symbols to be duplicates - most external linkers allow this and there are various situations where they can occur (including retpoline and retguard). Fixes #29563 Change-Id: I355493c847fbc8f670a85a643db65a4cf8f9883d Reviewed-on: https://go-review.googlesource.com/c/go/+/169658 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2019-03-27 07:53:19 -06:00
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
misc/cgo/test: simplify for module mode When we were first introducing module mode, CL 163418 moved many of the tests in misc/cgo/test into their own test binary under testdata so misc/cgo/test continued to work in both GOPATH mode and module mode. This introduce a somewhat complicated test driver into misc/cgo/test. Since the misc/cgo/test test had to invoke "go test" as a subprocess, this required care to thread any build flags down into the subprocess. The output from any failures of the sub-process was also less than ideal. Now that we don't have to worry about running these in GOPATH mode any more, this CL moves all of the tests back into misc/cgo/test and drops the test driver. There are two slight complications: - Test41761 was added after this split and has a C type "S" that's also present in misc/cgo/test itself. We rename that to keep that test working. - TestCgo in go/internal/srcimporter now fails to import misc/cgo/test because misc/cgo/test now contains imports of other "misc" module packages and the importer it sets up isn't configured to allow that. We fix this by setting up a build context that's configured for this. Preparation for #37486. Change-Id: I3c4f73540e0482bbd493823cca44b0ce7fac01f3 Reviewed-on: https://go-review.googlesource.com/c/go/+/447355 Reviewed-by: Bryan Mills <bcmills@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
2022-10-21 13:18:14 -06:00
//go:build !windows
cmd/link: permit duplicate weak symbols Permit weak symbols to be duplicates - most external linkers allow this and there are various situations where they can occur (including retpoline and retguard). Fixes #29563 Change-Id: I355493c847fbc8f670a85a643db65a4cf8f9883d Reviewed-on: https://go-review.googlesource.com/c/go/+/169658 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2019-03-27 07:53:19 -06:00
// +build !windows
// Issue 29563: internal linker fails on duplicate weak symbols.
// No runtime test; just make sure it compiles.
package cgotest
misc/cgo/test: simplify for module mode When we were first introducing module mode, CL 163418 moved many of the tests in misc/cgo/test into their own test binary under testdata so misc/cgo/test continued to work in both GOPATH mode and module mode. This introduce a somewhat complicated test driver into misc/cgo/test. Since the misc/cgo/test test had to invoke "go test" as a subprocess, this required care to thread any build flags down into the subprocess. The output from any failures of the sub-process was also less than ideal. Now that we don't have to worry about running these in GOPATH mode any more, this CL moves all of the tests back into misc/cgo/test and drops the test driver. There are two slight complications: - Test41761 was added after this split and has a C type "S" that's also present in misc/cgo/test itself. We rename that to keep that test working. - TestCgo in go/internal/srcimporter now fails to import misc/cgo/test because misc/cgo/test now contains imports of other "misc" module packages and the importer it sets up isn't configured to allow that. We fix this by setting up a build context that's configured for this. Preparation for #37486. Change-Id: I3c4f73540e0482bbd493823cca44b0ce7fac01f3 Reviewed-on: https://go-review.googlesource.com/c/go/+/447355 Reviewed-by: Bryan Mills <bcmills@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
2022-10-21 13:18:14 -06:00
import _ "misc/cgo/test/issue29563"
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