references and resolved names and writes them into a new file
_cgo_import.go, which looks like:

	//go:cgo_dynamic_linker "/lib64/ld-linux-x86-64.so.2"
	//go:cgo_import_dynamic puts puts#GLIBC_2.2.5 "libc.so.6"
	//go:cgo_import_dynamic __libc_start_main __libc_start_main#GLIBC_2.2.5 "libc.so.6"
	//go:cgo_import_dynamic stdout stdout#GLIBC_2.2.5 "libc.so.6"
	//go:cgo_import_dynamic fflush fflush#GLIBC_2.2.5 "libc.so.6"

			w := NewWalker(context, filepath.Join(testenv.GOROOT(b), "src"))
			for _, name := range w.stdPackages {
				pkg, _ := w.import_(name)
				w.export(pkg)
			}
			w.Features()
		}
	}
}

var warmupCache = sync.OnceFunc(func() {
	// Warm up the import cache in parallel.
	var wg sync.WaitGroup
	for _, context := range contexts {
		context := context
		wg.Add(1)
		go func() {

// license that can be found in the LICENSE file.

//go:build cgo

// Issue 26743: typedef of uint leads to inconsistent typedefs error.
// No runtime test; just make sure it compiles.

package cgotest

It is illegal for a package to import itself, directly or indirectly,
or to directly import a package without
referring to any of its exported identifiers. To import a package solely for
its side-effects (initialization), use the <a href="#Blank_identifier">blank</a>
identifier as explicit package name:
</p>

<pre>
import _ "lib/math"
</pre>


<h3 id="An_example_package">An example package</h3>

pkg go/constant, type Value interface, Kind() Kind
pkg go/constant, type Value interface, String() string
pkg go/constant, type Value interface, unexported methods
pkg go/importer, func Default() types.Importer
pkg go/importer, func For(string, Lookup) types.Importer
pkg go/importer, type Lookup func(string) (io.ReadCloser, error)
pkg go/parser, func ParseExprFrom(*token.FileSet, string, interface{}, Mode) (ast.Expr, error)
pkg go/types, const Bool = 1

						error_(sel.Pos(), `cannot define new methods on non-local type %s`, &buf)
					}
				}
			}
		}

	}
	if !sawC {
		error_(ast1.Package, `cannot find import "C"`)
	}

	// In ast2, strip the import "C" line.
	if *godefs {
		w := 0
		for _, decl := range ast2.Decls {
			d, ok := decl.(*ast.GenDecl)
			if !ok {
				ast2.Decls[w] = decl
				w++
				continue
			}

// license that can be found in the LICENSE file.

//go:build darwin

package issue24161arg

/*
#cgo LDFLAGS: -framework CoreFoundation
#include <CoreFoundation/CoreFoundation.h>
*/
import "C"
import "testing"

func Test(t *testing.T) {
	a := test24161array()
	C.CFArrayCreateCopy(0, a)

// Copyright 2018 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 issue26213

/*
#include "jni.h"
*/
import "C"
import (
	"testing"
)

func Test26213(t *testing.T) {
	var x1 C.jobject = 0 // Note: 0, not nil. That makes sure we use uintptr for these types.
	_ = x1
	var x2 C.jclass = 0
	_ = x2
	var x3 C.jthrowable = 0

// Copyright 2018 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 issue23555

// #include <stdlib.h>
import "C"

func X() {
	C.free(C.malloc(10))

// Copyright 2018 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 a

// typedef struct S ST;
// struct S { int f; };
import "C"

func F2(p *C.ST) {
	p.f = 1