On Tue, Jan 30, 2018 at 9:13 PM, hǎi sū <uor...@gmail.com> wrote:
> the code is below.
> ```
> package main
>
> import "math/rand"
> import "fmt"
>
> /*
> #include <stdio.h>
> #include <stdlib.h>
>
> void t(const short *buf, size_t buf_size) {
> printf("in t.");
> printf("0: %d ", buf[0]);
> printf("buf_size-1: %d\n", buf[buf_size-1]);
> }
>
> */
> import "C"
>
> func main() {
> for {
> a := make([]byte, 178209)
> rand.Read(a)
> fmt.Println(a[0], a[len(a)-1])
> aPointer := C.CBytes(a)
> C.t((*C.short)(aPointer), C.size_t(len(a)))
> C.free(aPointer)
> }
> }
> ```len(a) is the length in bytes, which is 178209. But the C code is using that length to index into a short*, meaning that it is looking at byte 356418, which is far past the end of the array. The C code should take unsigned char * or you should divide len(a) by 2 or something. Ian -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
