2.7.2 C临时访问传入的Go内存

[gooohlan]

2.7.2 C临时访问传入的Go内存

package main

/*
void printString(const char* s) {
    printf("%s", s);
}
*/
import "C"

func printString(s string) {
    cs := C.CString(s)
    defer C.free(unsafe.Pointer(cs))

    C.printString(cs)
}

func main() {
    s := "hello"
    printString(s)
}

go version go1.16.7 darwin/amd64 上述代码执行报错：could not determine kind of name for C.free 建议修改

package main

/*
#include <stdlib.h>
#include <stdio.h>

void printString(const char* s) {
    printf("%s", s);
}
*/
import "C"
import "unsafe"

func printString(s string) {
    cs := C.CString(s)
    defer C.free(unsafe.Pointer(cs))

    C.printString(cs)
}

func main() {
    s := "hello"
    printString(s)
}