stderr 'android/amd64 requires external \(cgo\) linking, but cgo is not enabled'
! stderr 'cannot find runtime/cgo'

! go test -c -o $devnull os
stderr '# os\nandroid/amd64 requires external \(cgo\) linking, but cgo is not enabled'
! stderr 'cannot find runtime/cgo'

env GOOS=ios GOARCH=arm64 CGO_ENABLED=0

! go build -o $devnull cmd/buildid
stderr 'ios/arm64 requires external \(cgo\) linking, but cgo is not enabled'

		fmt.Fprintf(fm, "void _cgo_release_context(size_t ctxt __attribute__((unused))) { }\n")
		fmt.Fprintf(fm, "char* _cgo_topofstack(void) { return (char*)0; }\n")
	} else {
		// If we're not importing runtime/cgo, we *are* runtime/cgo,
		// which provides these functions. We just need a prototype.
		fmt.Fprintf(fm, "void crosscall2(void(*fn)(void*), void *a, int c, size_t ctxt);\n")
		fmt.Fprintf(fm, "size_t _cgo_wait_runtime_init_done(void);\n")

	panic("cgo stub: cgo not available")
}

func cgoLookupCNAME(ctx context.Context, name string) (cname string, err error, completed bool) {
	panic("cgo stub: cgo not available")
}

func cgoLookupPTR(ctx context.Context, addr string) (ptrs []string, err error) {
	panic("cgo stub: cgo not available")

[compiler:gc] stderr '//go:cgo_ldflag only allowed in cgo-generated code|no Go files'

rm _cgo_yy.go

# Reject #cgo CFLAGS: -fplugin=foo.so
cp x.go.txt x.go
cp y_fplugin.go.txt y.go
! go build x
stderr 'invalid flag in #cgo CFLAGS: -fplugin=foo.so'

# Reject #cgo CFLAGS: -lbar -fplugin=foo.so
cp y_lbar_fplugin.go.txt y.go
! go build x
stderr 'invalid flag in #cgo CFLAGS: -fplugin=foo.so'

# Reject #cgo pkg-config: -foo

go build -x .
stderr '[/\\]cgo'$GOEXE'["]? .* -importpath runtime/cgo'
! stale runtime/cgo


# After runtime/cgo has been rebuilt and cached, it should not be rebuilt again.

go build -x .
! stderr '[/\\]cgo'$GOEXE'["]? .* -importpath runtime/cgo'
! stale runtime/cgo


-- go.mod --
module example.com/m

go 1.17
-- m.go --
package m

pkg syscall (darwin-386-cgo), const AF_PPP ideal-int
pkg syscall (darwin-386-cgo), const AF_PUP ideal-int
pkg syscall (darwin-386-cgo), const AF_RESERVED_36 ideal-int
pkg syscall (darwin-386-cgo), const AF_ROUTE ideal-int
pkg syscall (darwin-386-cgo), const AF_SIP ideal-int
pkg syscall (darwin-386-cgo), const AF_SNA ideal-int
pkg syscall (darwin-386-cgo), const AF_SYSTEM ideal-int

// Copyright 2014 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.

package nocgo

import "testing"

func TestNop(t *testing.T) {
	i := NoCgo()
	if i != 42 {
		t.Errorf("got %d, want %d", i, 42)
	}

			if have[name] {
				return nil
			}
			have[name] = true
			if !match(name) {
				return nil
			}
			pkg, err := cfg.BuildContext.ImportDir(path, 0)
			if err != nil {
				if _, noGo := err.(*build.NoGoError); noGo {
					// The package does not actually exist, so record neither the package
					// nor the error.
					return nil
				}
				// There was an error importing path, but not matching it,

! stdout '"sync"'

	# Experiment: the implicitly-imported package "runtime/cgo" is also a test variant,
	# because "runtime/cgo" also depends on "runtime".
stdout '"runtime/cgo \[runtime\.test\]"'
! stdout '"runtime/cgo"'


# Because the import of "runtime/cgo" in the cgo-generated file actually refers
# to "runtime/cgo [runtime.test]", the latter should be listed in the ImportMap.
# BUG(#46462): Today, it is not.

// to test correct handling of LDFLAGS.
#cgo linux LDFLAGS: -L. -lcgosotest
#cgo dragonfly LDFLAGS: -L. -l cgosotest
#cgo freebsd LDFLAGS: -L. -l cgosotest
#cgo openbsd LDFLAGS: -L. -l cgosotest
#cgo solaris LDFLAGS: -L. -lcgosotest
#cgo netbsd LDFLAGS: -L. libcgosotest.so
#cgo darwin LDFLAGS: -L. libcgosotest.dylib
#cgo windows LDFLAGS: -L. libcgosotest.a
#cgo aix LDFLAGS: -L. -l cgosotest

void init(void);