src/runtime/msan/msan.go

// Copyright 2015 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.

//go:build msan && ((linux && (amd64 || arm64 || loong64)) || (freebsd && amd64))

package msan

/*
#cgo CFLAGS: -fsanitize=memory
#cgo LDFLAGS: -fsanitize=memory

#include <stdint.h>
#include <sanitizer/msan_interface.h>

void __msan_read_go(void *addr, uintptr_t sz) {
	__msan_check_mem_is_initialized(addr, sz);
}

void __msan_write_go(void *addr, uintptr_t sz) {
	__msan_unpoison(addr, sz);
}

void __msan_malloc_go(void *addr, uintptr_t sz) {
	__msan_unpoison(addr, sz);
}

void __msan_free_go(void *addr, uintptr_t sz) {
	__msan_poison(addr, sz);
}

void __msan_memmove_go(void *to, const void *from, uintptr_t sz) {
	// Note: don't use msan_memmove, as it actually does
	// the move. We do the move ourselves, so it isn't necessary.
	// Also, it clobbers the target before we issue the write
	// barrier, which causes pointers to get lost. See issue 76138.
	__msan_copy_shadow(to, from, sz);
}
*/
import "C"