misc/cgo/testplugin: convert test.bash to Go and fix in module mode

Updates #30228
Updates #28387

Change-Id: Iad7d960b70221f90ccc2372bb1d4d41cec3926e4
Reviewed-on: https://go-review.googlesource.com/c/163214
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

31 files changed, 0 insertions, 983 deletions

diff --git a/misc/cgo/testplugin/src/checkdwarf/main.go b/misc/cgo/testplugin/src/checkdwarf/main.go
deleted file mode 100644
index 7886c834e7..0000000000
--- a/misc/cgo/testplugin/src/checkdwarf/main.go
+++ /dev/null
@@ -1,106 +0,0 @@
-// 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.
-
-// Usage:
-//
-//  checkdwarf <exe> <suffix>
-//
-// Opens <exe>, which must be an executable or a library and checks that
-// there is an entry in .debug_info whose name ends in <suffix>
-
-package main
-
-import (
-	"debug/dwarf"
-	"debug/elf"
-	"debug/macho"
-	"debug/pe"
-	"fmt"
-	"os"
-	"strings"
-)
-
-func usage() {
-	fmt.Fprintf(os.Stderr, "checkdwarf executable-or-library DIE-suffix\n")
-}
-
-type dwarfer interface {
-	DWARF() (*dwarf.Data, error)
-}
-
-func openElf(path string) dwarfer {
-	exe, err := elf.Open(path)
-	if err != nil {
-		return nil
-	}
-	return exe
-}
-
-func openMacho(path string) dwarfer {
-	exe, err := macho.Open(path)
-	if err != nil {
-		return nil
-	}
-	return exe
-}
-
-func openPE(path string) dwarfer {
-	exe, err := pe.Open(path)
-	if err != nil {
-		return nil
-	}
-	return exe
-}
-
-func main() {
-	if len(os.Args) != 3 {
-		usage()
-	}
-
-	exePath := os.Args[1]
-	dieSuffix := os.Args[2]
-
-	var exe dwarfer
-
-	for _, openfn := range []func(string) dwarfer{openMacho, openPE, openElf} {
-		exe = openfn(exePath)
-		if exe != nil {
-			break
-		}
-	}
-
-	if exe == nil {
-		fmt.Fprintf(os.Stderr, "could not open %s\n", exePath)
-		os.Exit(1)
-	}
-
-	data, err := exe.DWARF()
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "%s: error opening DWARF: %v\n", exePath, err)
-		os.Exit(1)
-	}
-
-	rdr := data.Reader()
-	for {
-		e, err := rdr.Next()
-		if err != nil {
-			fmt.Fprintf(os.Stderr, "%s: error reading DWARF: %v\n", exePath, err)
-			os.Exit(1)
-		}
-		if e == nil {
-			break
-		}
-		name, hasname := e.Val(dwarf.AttrName).(string)
-		if !hasname {
-			continue
-		}
-		if strings.HasSuffix(name, dieSuffix) {
-			// found
-			os.Exit(0)
-		}
-	}
-
-	fmt.Fprintf(os.Stderr, "%s: no entry with a name ending in %q was found\n", exePath, dieSuffix)
-	os.Exit(1)
-}
diff --git a/misc/cgo/testplugin/src/common/common.go b/misc/cgo/testplugin/src/common/common.go
deleted file mode 100644
index b064e6bccf..0000000000
--- a/misc/cgo/testplugin/src/common/common.go
+++ /dev/null
@@ -1,11 +0,0 @@
-// Copyright 2016 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 common
-
-var X int
-
-func init() {
-	X = 3
-}
diff --git a/misc/cgo/testplugin/src/host/host.go b/misc/cgo/testplugin/src/host/host.go
deleted file mode 100644
index 0ca17da3de..0000000000
--- a/misc/cgo/testplugin/src/host/host.go
+++ /dev/null
@@ -1,176 +0,0 @@
-// Copyright 2016 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 main
-
-import (
-	"fmt"
-	"log"
-	"path/filepath"
-	"plugin"
-	"strings"
-
-	"common"
-)
-
-func init() {
-	common.X *= 5
-}
-
-// testUnnamed tests that two plugins built with .go files passed on
-// the command line do not have overlapping symbols. That is,
-// unnamed1.so/FuncInt and unnamed2.so/FuncInt should be distinct functions.
-func testUnnamed() {
-	p, err := plugin.Open("unnamed1.so")
-	if err != nil {
-		log.Fatalf(`plugin.Open("unnamed1.so"): %v`, err)
-	}
-	fn, err := p.Lookup("FuncInt")
-	if err != nil {
-		log.Fatalf(`unnamed1.so: Lookup("FuncInt") failed: %v`, err)
-	}
-	if got, want := fn.(func() int)(), 1; got != want {
-		log.Fatalf("unnamed1.so: FuncInt()=%d, want %d", got, want)
-	}
-
-	p, err = plugin.Open("unnamed2.so")
-	if err != nil {
-		log.Fatalf(`plugin.Open("unnamed2.so"): %v`, err)
-	}
-	fn, err = p.Lookup("FuncInt")
-	if err != nil {
-		log.Fatalf(`unnamed2.so: Lookup("FuncInt") failed: %v`, err)
-	}
-	if got, want := fn.(func() int)(), 2; got != want {
-		log.Fatalf("unnamed2.so: FuncInt()=%d, want %d", got, want)
-	}
-}
-
-func main() {
-	if got, want := common.X, 3*5; got != want {
-		log.Fatalf("before plugin load common.X=%d, want %d", got, want)
-	}
-
-	p, err := plugin.Open("plugin1.so")
-	if err != nil {
-		log.Fatalf("plugin.Open failed: %v", err)
-	}
-
-	const wantX = 3 * 5 * 7
-	if got := common.X; got != wantX {
-		log.Fatalf("after plugin load common.X=%d, want %d", got, wantX)
-	}
-
-	seven, err := p.Lookup("Seven")
-	if err != nil {
-		log.Fatalf(`Lookup("Seven") failed: %v`, err)
-	}
-	if got, want := *seven.(*int), 7; got != want {
-		log.Fatalf("plugin1.Seven=%d, want %d", got, want)
-	}
-
-	readFunc, err := p.Lookup("ReadCommonX")
-	if err != nil {
-		log.Fatalf(`plugin1.Lookup("ReadCommonX") failed: %v`, err)
-	}
-	if got := readFunc.(func() int)(); got != wantX {
-		log.Fatalf("plugin1.ReadCommonX()=%d, want %d", got, wantX)
-	}
-
-	// sub/plugin1.so is a different plugin with the same name as
-	// the already loaded plugin. It also depends on common. Test
-	// that we can load the different plugin, it is actually
-	// different, and that it sees the same common package.
-	subpPath, err := filepath.Abs("sub/plugin1.so")
-	if err != nil {
-		log.Fatalf("filepath.Abs(%q) failed: %v", subpPath, err)
-	}
-	subp, err := plugin.Open(subpPath)
-	if err != nil {
-		log.Fatalf("plugin.Open(%q) failed: %v", subpPath, err)
-	}
-
-	funcVar, err := subp.Lookup("FuncVar")
-	if err != nil {
-		log.Fatalf(`sub/plugin1.Lookup("FuncVar") failed: %v`, err)
-	}
-	called := false
-	*funcVar.(*func()) = func() {
-		called = true
-	}
-
-	readFunc, err = subp.Lookup("ReadCommonX")
-	if err != nil {
-		log.Fatalf(`sub/plugin1.Lookup("ReadCommonX") failed: %v`, err)
-	}
-	if got := readFunc.(func() int)(); got != wantX {
-		log.Fatalf("sub/plugin1.ReadCommonX()=%d, want %d", got, wantX)
-	}
-	if !called {
-		log.Fatal("calling ReadCommonX did not call FuncVar")
-	}
-
-	subf, err := subp.Lookup("F")
-	if err != nil {
-		log.Fatalf(`sub/plugin1.Lookup("F") failed: %v`, err)
-	}
-	if gotf := subf.(func() int)(); gotf != 17 {
-		log.Fatalf(`sub/plugin1.F()=%d, want 17`, gotf)
-	}
-	f, err := p.Lookup("F")
-	if err != nil {
-		log.Fatalf(`plugin1.Lookup("F") failed: %v`, err)
-	}
-	if gotf := f.(func() int)(); gotf != 3 {
-		log.Fatalf(`plugin1.F()=%d, want 17`, gotf)
-	}
-
-	p2, err := plugin.Open("plugin2.so")
-	if err != nil {
-		log.Fatalf("plugin.Open failed: %v", err)
-	}
-	// Check that plugin2's init function was called, and
-	// that it modifies the same global variable as the host.
-	if got, want := common.X, 2; got != want {
-		log.Fatalf("after loading plugin2, common.X=%d, want %d", got, want)
-	}
-
-	_, err = plugin.Open("plugin2-dup.so")
-	if err == nil {
-		log.Fatal(`plugin.Open("plugin2-dup.so"): duplicate open should have failed`)
-	}
-	if s := err.Error(); !strings.Contains(s, "already loaded") {
-		log.Fatal(`plugin.Open("plugin2.so"): error does not mention "already loaded"`)
-	}
-
-	_, err = plugin.Open("plugin-mismatch.so")
-	if err == nil {
-		log.Fatal(`plugin.Open("plugin-mismatch.so"): should have failed`)
-	}
-	if s := err.Error(); !strings.Contains(s, "different version") {
-		log.Fatalf(`plugin.Open("plugin-mismatch.so"): error does not mention "different version": %v`, s)
-	}
-
-	_, err = plugin.Open("plugin2-dup.so")
-	if err == nil {
-		log.Fatal(`plugin.Open("plugin2-dup.so"): duplicate open after bad plugin should have failed`)
-	}
-	_, err = plugin.Open("plugin2.so")
-	if err != nil {
-		log.Fatalf(`plugin.Open("plugin2.so"): second open with same name failed: %v`, err)
-	}
-
-	// Test that unexported types with the same names in
-	// different plugins do not interfere with each other.
-	//
-	// See Issue #21386.
-	UnexportedNameReuse, _ := p.Lookup("UnexportedNameReuse")
-	UnexportedNameReuse.(func())()
-	UnexportedNameReuse, _ = p2.Lookup("UnexportedNameReuse")
-	UnexportedNameReuse.(func())()
-
-	testUnnamed()
-
-	fmt.Println("PASS")
-}
diff --git a/misc/cgo/testplugin/src/iface/main.go b/misc/cgo/testplugin/src/iface/main.go
deleted file mode 100644
index 5e7e4d8b48..0000000000
--- a/misc/cgo/testplugin/src/iface/main.go
+++ /dev/null
@@ -1,46 +0,0 @@
-// Copyright 2017 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 main
-
-import (
-	"iface_i"
-	"log"
-	"plugin"
-)
-
-func main() {
-	a, err := plugin.Open("iface_a.so")
-	if err != nil {
-		log.Fatalf(`plugin.Open("iface_a.so"): %v`, err)
-	}
-	b, err := plugin.Open("iface_b.so")
-	if err != nil {
-		log.Fatalf(`plugin.Open("iface_b.so"): %v`, err)
-	}
-
-	af, err := a.Lookup("F")
-	if err != nil {
-		log.Fatalf(`a.Lookup("F") failed: %v`, err)
-	}
-	bf, err := b.Lookup("F")
-	if err != nil {
-		log.Fatalf(`b.Lookup("F") failed: %v`, err)
-	}
-	if af.(func() interface{})() != bf.(func() interface{})() {
-		panic("empty interfaces not equal")
-	}
-
-	ag, err := a.Lookup("G")
-	if err != nil {
-		log.Fatalf(`a.Lookup("G") failed: %v`, err)
-	}
-	bg, err := b.Lookup("G")
-	if err != nil {
-		log.Fatalf(`b.Lookup("G") failed: %v`, err)
-	}
-	if ag.(func() iface_i.I)() != bg.(func() iface_i.I)() {
-		panic("nonempty interfaces not equal")
-	}
-}
diff --git a/misc/cgo/testplugin/src/iface_a/a.go b/misc/cgo/testplugin/src/iface_a/a.go
deleted file mode 100644
index 29d2e27764..0000000000
--- a/misc/cgo/testplugin/src/iface_a/a.go
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright 2017 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 main
-
-import "iface_i"
-
-//go:noinline
-func F() interface{} {
-	return (*iface_i.T)(nil)
-}
-
-//go:noinline
-func G() iface_i.I {
-	return (*iface_i.T)(nil)
-}
diff --git a/misc/cgo/testplugin/src/iface_b/b.go b/misc/cgo/testplugin/src/iface_b/b.go
deleted file mode 100644
index 29d2e27764..0000000000
--- a/misc/cgo/testplugin/src/iface_b/b.go
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright 2017 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 main
-
-import "iface_i"
-
-//go:noinline
-func F() interface{} {
-	return (*iface_i.T)(nil)
-}
-
-//go:noinline
-func G() iface_i.I {
-	return (*iface_i.T)(nil)
-}
diff --git a/misc/cgo/testplugin/src/iface_i/i.go b/misc/cgo/testplugin/src/iface_i/i.go
deleted file mode 100644
index 31c80387c7..0000000000
--- a/misc/cgo/testplugin/src/iface_i/i.go
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright 2017 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 iface_i
-
-type I interface {
-	M()
-}
-
-type T struct {
-}
-
-func (t *T) M() {
-}
-
-// *T implements I
diff --git a/misc/cgo/testplugin/src/issue18584/main.go b/misc/cgo/testplugin/src/issue18584/main.go
deleted file mode 100644
index c280fd4620..0000000000
--- a/misc/cgo/testplugin/src/issue18584/main.go
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2017 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 main
-
-import "plugin"
-
-func main() {
-	p, err := plugin.Open("plugin.so")
-	if err != nil {
-		panic(err)
-	}
-
-	sym, err := p.Lookup("G")
-	if err != nil {
-		panic(err)
-	}
-	g := sym.(func() bool)
-	if !g() {
-		panic("expected types to match, Issue #18584")
-	}
-}
diff --git a/misc/cgo/testplugin/src/issue18584/plugin.go b/misc/cgo/testplugin/src/issue18584/plugin.go
deleted file mode 100644
index be0868d375..0000000000
--- a/misc/cgo/testplugin/src/issue18584/plugin.go
+++ /dev/null
@@ -1,19 +0,0 @@
-// Copyright 2017 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 main
-
-import "reflect"
-
-type C struct {
-}
-
-func F(c *C) *C {
-	return nil
-}
-
-func G() bool {
-	var c *C
-	return reflect.TypeOf(F).Out(0) == reflect.TypeOf(c)
-}
diff --git a/misc/cgo/testplugin/src/issue18676/dynamodbstreamsevt/definition.go b/misc/cgo/testplugin/src/issue18676/dynamodbstreamsevt/definition.go
deleted file mode 100644
index 70fd054d08..0000000000
--- a/misc/cgo/testplugin/src/issue18676/dynamodbstreamsevt/definition.go
+++ /dev/null
@@ -1,13 +0,0 @@
-// Copyright 2017 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 dynamodbstreamsevt
-
-import "encoding/json"
-
-var foo json.RawMessage
-
-type Event struct{}
-
-func (e *Event) Dummy() {}
diff --git a/misc/cgo/testplugin/src/issue18676/main.go b/misc/cgo/testplugin/src/issue18676/main.go
deleted file mode 100644
index c75409dafe..0000000000
--- a/misc/cgo/testplugin/src/issue18676/main.go
+++ /dev/null
@@ -1,31 +0,0 @@
-// Copyright 2017 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.
-
-// The bug happened like this:
-// 1) The main binary adds an itab for *json.UnsupportedValueError / error
-//    (concrete type / interface type).  This itab goes in hash bucket 0x111.
-// 2) The plugin adds that same itab again.  That makes a cycle in the itab
-//    chain rooted at hash bucket 0x111.
-// 3) The main binary then asks for the itab for *dynamodbstreamsevt.Event /
-//    json.Unmarshaler.  This itab happens to also live in bucket 0x111.
-//    The lookup code goes into an infinite loop searching for this itab.
-// The code is carefully crafted so that the two itabs are both from the
-// same bucket, and so that the second itab doesn't exist in
-// the itab hashmap yet (so the entire linked list must be searched).
-package main
-
-import (
-	"encoding/json"
-	"issue18676/dynamodbstreamsevt"
-	"plugin"
-)
-
-func main() {
-	plugin.Open("plugin.so")
-
-	var x interface{} = (*dynamodbstreamsevt.Event)(nil)
-	if _, ok := x.(json.Unmarshaler); !ok {
-		println("something")
-	}
-}
diff --git a/misc/cgo/testplugin/src/issue18676/plugin.go b/misc/cgo/testplugin/src/issue18676/plugin.go
deleted file mode 100644
index 8a3b85a75c..0000000000
--- a/misc/cgo/testplugin/src/issue18676/plugin.go
+++ /dev/null
@@ -1,11 +0,0 @@
-// Copyright 2017 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 main
-
-import "C"
-
-import "issue18676/dynamodbstreamsevt"
-
-func F(evt *dynamodbstreamsevt.Event) {}
diff --git a/misc/cgo/testplugin/src/issue19418/main.go b/misc/cgo/testplugin/src/issue19418/main.go
deleted file mode 100644
index 2ec9f9aaaa..0000000000
--- a/misc/cgo/testplugin/src/issue19418/main.go
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright 2017 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 main
-
-import (
-	"fmt"
-	"os"
-	"plugin"
-)
-
-func main() {
-	p, err := plugin.Open("plugin.so")
-	if err != nil {
-		panic(err)
-	}
-
-	val, err := p.Lookup("Val")
-	if err != nil {
-		panic(err)
-	}
-	got := *val.(*string)
-	const want = "linkstr"
-	if got != want {
-		fmt.Fprintf(os.Stderr, "issue19418 value is %q, want %q\n", got, want)
-		os.Exit(2)
-	}
-}
diff --git a/misc/cgo/testplugin/src/issue19418/plugin.go b/misc/cgo/testplugin/src/issue19418/plugin.go
deleted file mode 100644
index fe93b16143..0000000000
--- a/misc/cgo/testplugin/src/issue19418/plugin.go
+++ /dev/null
@@ -1,7 +0,0 @@
-// Copyright 2017 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 main
-
-var Val = "val-unset"
diff --git a/misc/cgo/testplugin/src/issue19529/plugin.go b/misc/cgo/testplugin/src/issue19529/plugin.go
deleted file mode 100644
index ad2df6cc7c..0000000000
--- a/misc/cgo/testplugin/src/issue19529/plugin.go
+++ /dev/null
@@ -1,15 +0,0 @@
-package main
-
-import (
-	"reflect"
-)
-
-type Foo struct {
-	Bar string `json:"Bar@baz,omitempty"`
-}
-
-func F() {
-	println(reflect.TypeOf(Foo{}).Field(0).Tag)
-}
-
-func main() {}
diff --git a/misc/cgo/testplugin/src/issue19534/main.go b/misc/cgo/testplugin/src/issue19534/main.go
deleted file mode 100644
index de263b6f0f..0000000000
--- a/misc/cgo/testplugin/src/issue19534/main.go
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2017 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 main
-
-import "plugin"
-
-func main() {
-	p, err := plugin.Open("plugin.so")
-	if err != nil {
-		panic(err)
-	}
-
-	sym, err := p.Lookup("Foo")
-	if err != nil {
-		panic(err)
-	}
-	f := sym.(func() int)
-	if f() != 42 {
-		panic("expected f() == 42")
-	}
-}
diff --git a/misc/cgo/testplugin/src/issue19534/plugin.go b/misc/cgo/testplugin/src/issue19534/plugin.go
deleted file mode 100644
index 582d33305c..0000000000
--- a/misc/cgo/testplugin/src/issue19534/plugin.go
+++ /dev/null
@@ -1,9 +0,0 @@
-// Copyright 2017 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 main
-
-func Foo() int {
-	return 42
-}
diff --git a/misc/cgo/testplugin/src/issue22175/main.go b/misc/cgo/testplugin/src/issue22175/main.go
deleted file mode 100644
index 9be9bab9dc..0000000000
--- a/misc/cgo/testplugin/src/issue22175/main.go
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright 2017 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 main
-
-import (
-	"fmt"
-	"os"
-	"plugin"
-)
-
-func main() {
-	p2, err := plugin.Open("issue22175_plugin1.so")
-	if err != nil {
-		panic(err)
-	}
-	f, err := p2.Lookup("F")
-	if err != nil {
-		panic(err)
-	}
-	got := f.(func() int)()
-	const want = 971
-	if got != want {
-		fmt.Fprintf(os.Stderr, "issue22175: F()=%d, want %d", got, want)
-		os.Exit(1)
-	}
-}
diff --git a/misc/cgo/testplugin/src/issue22175/plugin1.go b/misc/cgo/testplugin/src/issue22175/plugin1.go
deleted file mode 100644
index 5ae6cb631e..0000000000
--- a/misc/cgo/testplugin/src/issue22175/plugin1.go
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2017 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 main
-
-import "plugin"
-
-func F() int {
-	p2, err := plugin.Open("issue22175_plugin2.so")
-	if err != nil {
-		panic(err)
-	}
-	g, err := p2.Lookup("G")
-	if err != nil {
-		panic(err)
-	}
-	return g.(func() int)()
-}
-
-func main() {}
diff --git a/misc/cgo/testplugin/src/issue22175/plugin2.go b/misc/cgo/testplugin/src/issue22175/plugin2.go
deleted file mode 100644
index f387a192e6..0000000000
--- a/misc/cgo/testplugin/src/issue22175/plugin2.go
+++ /dev/null
@@ -1,9 +0,0 @@
-// Copyright 2017 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 main
-
-func G() int { return 971 }
-
-func main() {}
diff --git a/misc/cgo/testplugin/src/issue22295.pkg/main.go b/misc/cgo/testplugin/src/issue22295.pkg/main.go
deleted file mode 100644
index 6cb186e100..0000000000
--- a/misc/cgo/testplugin/src/issue22295.pkg/main.go
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright 2017 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.
-
-// +build ignore
-
-package main
-
-import (
-	"log"
-	"plugin"
-)
-
-func main() {
-	p, err := plugin.Open("issue.22295.so")
-	if err != nil {
-		log.Fatal(err)
-	}
-	f, err := p.Lookup("F")
-	if err != nil {
-		log.Fatal(err)
-	}
-	const want = 2503
-	got := f.(func() int)()
-	if got != want {
-		log.Fatalf("got %d, want %d", got, want)
-	}
-}
diff --git a/misc/cgo/testplugin/src/issue22295.pkg/plugin.go b/misc/cgo/testplugin/src/issue22295.pkg/plugin.go
deleted file mode 100644
index 46b08a405b..0000000000
--- a/misc/cgo/testplugin/src/issue22295.pkg/plugin.go
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2017 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 main
-
-var f *int
-
-func init() {
-	f = new(int)
-	*f = 2503
-}
-
-func F() int { return *f }
-
-func main() {}
diff --git a/misc/cgo/testplugin/src/issue24351/main.go b/misc/cgo/testplugin/src/issue24351/main.go
deleted file mode 100644
index 4107adff7b..0000000000
--- a/misc/cgo/testplugin/src/issue24351/main.go
+++ /dev/null
@@ -1,21 +0,0 @@
-// 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 main
-
-import "plugin"
-
-func main() {
-	p, err := plugin.Open("issue24351.so")
-	if err != nil {
-		panic(err)
-	}
-	f, err := p.Lookup("B")
-	if err != nil {
-		panic(err)
-	}
-	c := make(chan bool)
-	f.(func(chan bool))(c)
-	<-c
-}
diff --git a/misc/cgo/testplugin/src/issue24351/plugin.go b/misc/cgo/testplugin/src/issue24351/plugin.go
deleted file mode 100644
index db17e0a609..0000000000
--- a/misc/cgo/testplugin/src/issue24351/plugin.go
+++ /dev/null
@@ -1,14 +0,0 @@
-// 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 main
-
-import "fmt"
-
-func B(c chan bool) {
-	go func() {
-		fmt.Println(1.5)
-		c <- true
-	}()
-}
diff --git a/misc/cgo/testplugin/src/issue25756/main.go b/misc/cgo/testplugin/src/issue25756/main.go
deleted file mode 100644
index 817daf42f6..0000000000
--- a/misc/cgo/testplugin/src/issue25756/main.go
+++ /dev/null
@@ -1,52 +0,0 @@
-// 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.
-
-// Run the game of life in C using Go for parallelization.
-
-package main
-
-import (
-	"flag"
-	"fmt"
-	"plugin"
-)
-
-const MAXDIM = 100
-
-var dim = flag.Int("dim", 16, "board dimensions")
-var gen = flag.Int("gen", 10, "generations")
-
-func main() {
-	flag.Parse()
-
-	var a [MAXDIM * MAXDIM]int32
-	for i := 2; i < *dim; i += 8 {
-		for j := 2; j < *dim-3; j += 8 {
-			for y := 0; y < 3; y++ {
-				a[i**dim+j+y] = 1
-			}
-		}
-	}
-
-	p, err := plugin.Open("life.so")
-	if err != nil {
-		panic(err)
-	}
-	f, err := p.Lookup("Run")
-	if err != nil {
-		panic(err)
-	}
-	f.(func(int, int, int, []int32))(*gen, *dim, *dim, a[:])
-
-	for i := 0; i < *dim; i++ {
-		for j := 0; j < *dim; j++ {
-			if a[i**dim+j] == 0 {
-				fmt.Print(" ")
-			} else {
-				fmt.Print("X")
-			}
-		}
-		fmt.Print("\n")
-	}
-}
diff --git a/misc/cgo/testplugin/src/issue25756/plugin/c-life.c b/misc/cgo/testplugin/src/issue25756/plugin/c-life.c
deleted file mode 100644
index f853163e2f..0000000000
--- a/misc/cgo/testplugin/src/issue25756/plugin/c-life.c
+++ /dev/null
@@ -1,56 +0,0 @@
-// Copyright 2010 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.
-
-#include <assert.h>
-#include "life.h"
-#include "_cgo_export.h"
-
-const int MYCONST = 0;
-
-// Do the actual manipulation of the life board in C.  This could be
-// done easily in Go, we are just using C for demonstration
-// purposes.
-void
-Step(int x, int y, int *a, int *n)
-{
-	struct GoStart_return r;
-
-	// Use Go to start 4 goroutines each of which handles 1/4 of the
-	// board.
-	r = GoStart(0, x, y, 0, x / 2, 0, y / 2, a, n);
-	assert(r.r0 == 0 && r.r1 == 100);	// test multiple returns
-	r = GoStart(1, x, y, x / 2, x, 0, y / 2, a, n);
-	assert(r.r0 == 1 && r.r1 == 101);	// test multiple returns
-	GoStart(2, x, y, 0, x / 2, y / 2, y, a, n);
-	GoStart(3, x, y, x / 2, x, y / 2, y, a, n);
-	GoWait(0);
-	GoWait(1);
-	GoWait(2);
-	GoWait(3);
-}
-
-// The actual computation.  This is called in parallel.
-void
-DoStep(int xdim, int ydim, int xstart, int xend, int ystart, int yend, int *a, int *n)
-{
-	int x, y, c, i, j;
-
-	for(x = xstart; x < xend; x++) {
-		for(y = ystart; y < yend; y++) {
-			c = 0;
-			for(i = -1; i <= 1; i++) {
-				for(j = -1; j <= 1; j++) {
-				  if(x+i >= 0 && x+i < xdim &&
-					y+j >= 0 && y+j < ydim &&
-					(i != 0 || j != 0))
-				    c += a[(x+i)*xdim + (y+j)] != 0;
-				}
-			}
-			if(c == 3 || (c == 2 && a[x*xdim + y] != 0))
-				n[x*xdim + y] = 1;
-			else
-				n[x*xdim + y] = 0;
-		}
-	}
-}
diff --git a/misc/cgo/testplugin/src/issue25756/plugin/life.go b/misc/cgo/testplugin/src/issue25756/plugin/life.go
deleted file mode 100644
index 675a192fc1..0000000000
--- a/misc/cgo/testplugin/src/issue25756/plugin/life.go
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright 2010 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 main
-
-// #include "life.h"
-import "C"
-
-import "unsafe"
-
-func Run(gen, x, y int, a []int32) {
-	n := make([]int32, x*y)
-	for i := 0; i < gen; i++ {
-		C.Step(C.int(x), C.int(y), (*C.int)(unsafe.Pointer(&a[0])), (*C.int)(unsafe.Pointer(&n[0])))
-		copy(a, n)
-	}
-}
-
-// Keep the channels visible from Go.
-var chans [4]chan bool
-
-//export GoStart
-// Double return value is just for testing.
-func GoStart(i, xdim, ydim, xstart, xend, ystart, yend C.int, a *C.int, n *C.int) (int, int) {
-	c := make(chan bool, int(C.MYCONST))
-	go func() {
-		C.DoStep(xdim, ydim, xstart, xend, ystart, yend, a, n)
-		c <- true
-	}()
-	chans[i] = c
-	return int(i), int(i + 100)
-}
-
-//export GoWait
-func GoWait(i C.int) {
-	<-chans[i]
-	chans[i] = nil
-}
diff --git a/misc/cgo/testplugin/src/issue25756/plugin/life.h b/misc/cgo/testplugin/src/issue25756/plugin/life.h
deleted file mode 100644
index 11d2b97226..0000000000
--- a/misc/cgo/testplugin/src/issue25756/plugin/life.h
+++ /dev/null
@@ -1,7 +0,0 @@
-// Copyright 2010 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.
-
-extern void Step(int, int, int *, int *);
-extern void DoStep(int, int, int, int, int, int, int *, int *);
-extern const int MYCONST;
diff --git a/misc/cgo/testplugin/src/plugin1/plugin1.go b/misc/cgo/testplugin/src/plugin1/plugin1.go
deleted file mode 100644
index 0a9fa2f2c1..0000000000
--- a/misc/cgo/testplugin/src/plugin1/plugin1.go
+++ /dev/null
@@ -1,56 +0,0 @@
-// Copyright 2016 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 main
-
-// // No C code required.
-import "C"
-
-import (
-	"common"
-	"reflect"
-)
-
-func F() int {
-	_ = make([]byte, 1<<21) // trigger stack unwind, Issue #18190.
-	return 3
-}
-
-func ReadCommonX() int {
-	return common.X
-}
-
-var Seven int
-
-func call(fn func()) {
-	fn()
-}
-
-func g() {
-	common.X *= Seven
-}
-
-func init() {
-	Seven = 7
-	call(g)
-}
-
-type sameNameReusedInPlugins struct {
-	X string
-}
-
-type sameNameHolder struct {
-	F *sameNameReusedInPlugins
-}
-
-func UnexportedNameReuse() {
-	h := sameNameHolder{}
-	v := reflect.ValueOf(&h).Elem().Field(0)
-	newval := reflect.New(v.Type().Elem())
-	v.Set(newval)
-}
-
-func main() {
-	panic("plugin1.main called")
-}
diff --git a/misc/cgo/testplugin/src/plugin2/plugin2.go b/misc/cgo/testplugin/src/plugin2/plugin2.go
deleted file mode 100644
index a67f2de27a..0000000000
--- a/misc/cgo/testplugin/src/plugin2/plugin2.go
+++ /dev/null
@@ -1,43 +0,0 @@
-// Copyright 2016 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 main
-
-//#include <errno.h>
-//#include <string.h>
-import "C"
-
-// #include
-// void cfunc() {} // uses cgo_topofstack
-
-import (
-	"common"
-	"reflect"
-	"strings"
-)
-
-func init() {
-	_ = strings.NewReplacer() // trigger stack unwind, Issue #18190.
-	C.strerror(C.EIO)         // uses cgo_topofstack
-	common.X = 2
-}
-
-type sameNameReusedInPlugins struct {
-	X string
-}
-
-type sameNameHolder struct {
-	F *sameNameReusedInPlugins
-}
-
-func UnexportedNameReuse() {
-	h := sameNameHolder{}
-	v := reflect.ValueOf(&h).Elem().Field(0)
-	newval := reflect.New(v.Type().Elem())
-	v.Set(newval)
-}
-
-func main() {
-	panic("plugin1.main called")
-}
diff --git a/misc/cgo/testplugin/src/sub/plugin1/plugin1.go b/misc/cgo/testplugin/src/sub/plugin1/plugin1.go
deleted file mode 100644
index cf9000c4a4..0000000000
--- a/misc/cgo/testplugin/src/sub/plugin1/plugin1.go
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2016 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 main
-
-// // No C code required.
-import "C"
-
-import "common"
-
-func F() int { return 17 }
-
-var FuncVar = func() {}
-
-func ReadCommonX() int {
-	FuncVar()
-	return common.X
-}
-
-func main() {
-	panic("plugin1.main called")
-}