I am working with a C library that, unlike below, I do not control. I need to pass to a C function a pointer to an array that also contains pointers.
package main
/*
#include <stdio.h>
typedef int* pInt;
void foo(pInt p[]) {
printf("foo()\n");
}
*/
import "C"
import "unsafe"
func main() {
var i C.int
var p1 C.pInt = (*C.int)(unsafe.Pointer(&i))
var p2 C.pInt = (*C.int)(unsafe.Pointer(&i))
var ps []C.pInt = []C.pInt{p1, p2}
C.foo(unsafe.Pointer(&ps[0]))
}
This code results in the error panic: runtime error: cgo argument has Go pointer to Go pointer. I am wondering how I can rewrite the Go portion of this code so that it satisfies Cgo's pointer rules. My hope is that I can do this without having to write C helper code.