// Copyright 2021 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.

// A type can be passed to a plugin and converted to interface
// there. So its methods need to be live.

package main

import (
	"plugin"

	"testplugin/method2/p"
)

var t p.T

type I interface{ M() }

func main() {
	pl, err := plugin.Open("method2.so")

many x/vuln CLs to implement accepted proposal https://go.dev/issue/61347 ("x/vuln: convert govulncheck output to sarif format") in govulncheck
CL 516355 - x/crypto CL that implemented accepted proposal https://go.dev/issue/61447 for x/crypto/ssh; doesn't need a Go 1.23 release note

		fail:    false,
	},
	{
		// Test that a converted address of a struct field results
		// in a check for just that field and not the whole struct.
		name:    "structfieldcast",
		c:       `struct S40i { int i; int* p; }; void f40(struct S40i* p) {}`,

// the stack as uninitialized.
//
//go:noinline
func F1() uintptr {
	s := C.f()
	return uintptr(s.a[0])
}

// F2 allocates a struct on the stack and converts it to an empty interface,
// which will call msanread and see that the data appears uninitialized.
//
//go:noinline
func F2() interface{} {
	return C.S{}
}

func poisonStack(i int) int {
	if i == 0 {

<pre>
*Point(p)        // same as *(Point(p))
(*Point)(p)      // p is converted to *Point
&lt;-chan int(c)    // same as &lt;-(chan int(c))
(&lt;-chan int)(c)  // c is converted to &lt;-chan int
func()(x)        // function signature func() x
(func())(x)      // x is converted to func()
(func() int)(x)  // x is converted to func() int
func() int(x)    // x is converted to func() int (unambiguous)
</pre>

<p>

// nearest block edge where 0 <= n < blockSize.
func blockPadding(offset int64) (n int64) {
	return -offset & (blockSize - 1)
}

var zeroBlock block

type block [blockSize]byte

// Convert block to any number of formats.
func (b *block) toV7() *headerV7       { return (*headerV7)(b) }
func (b *block) toGNU() *headerGNU     { return (*headerGNU)(b) }
func (b *block) toSTAR() *headerSTAR   { return (*headerSTAR)(b) }

	}
	return string(unicode.ToUpper(r)) + s[size:]
}

// godefsFields rewrites field names for use in Go or C definitions.
// It strips leading common prefixes (like tv_ in tv_sec, tv_usec)
// converts names to upper case, and rewrites _ into Pad_godefs_n,
// so that all fields are exported.
func godefsFields(fld []*ast.Field) {
	prefix := fieldPrefix(fld)

	// Issue 48396: check for duplicate field names.

func sliceOfString(s [][]byte) []string {
	result := make([]string, len(s))
	for i, v := range s {
		result[i] = string(v)
	}
	return result
}

// For ease of reading, the test cases use strings that are converted to byte
// slices before invoking the functions.

var abcd = "abcd"
var faces = "☺☻☹"
var commas = "1,2,3,4"
var dots = "1....2....3....4"

type BinOpTest struct {
	a string
	b string
	i int
}

	//   printf("%s\n", s);
	// }
	import "C"
	import "unsafe"

	func main() {
		cs := C.CString("Hello from stdio")
		C.myprint(cs)
		C.free(unsafe.Pointer(cs))
	}

A few special functions convert between Go and C types
by making copies of the data. In pseudo-Go definitions:

	// Go string to C string
	// The C string is allocated in the C heap using malloc.

// isASCII reports whether the input is an ASCII C-style string.
func isASCII(s string) bool {
	for _, c := range s {
		if c >= 0x80 || c == 0x00 {
			return false
		}
	}
	return true
}

// toASCII converts the input to an ASCII C-style string.
// This is a best effort conversion, so invalid characters are dropped.
func toASCII(s string) string {
	if isASCII(s) {
		return s
	}
	b := make([]byte, 0, len(s))