Note that in general C strings are not restricted to 2³¹ bytes on 64-bit
systems.
(Larger strings are unusual, but fairly trivial to construct.)
So I would recommend avoiding hard-coded array types of any size.
You say that C.GoBytes truncates at zero. However, that does not reproduce
for me.
Are you sure that you are passing in the correct value for `sz`?
―
example.com$ cat main.go
package main
import (
"fmt"
"unsafe"
)
/*
#include <stddef.h>
#include <string.h>
char* message() {
return "Hello,\0 Go";
}
*/
import "C"
func charToBytes(src *C.char, sz int) []byte {
return C.GoBytes(unsafe.Pointer(src), C.int(sz))
}
func main() {
b := charToBytes(C.message(), 10)
fmt.Printf("%s\n", b)
}
example.com$ go run main.go
Hello, Go
example.com$
On Saturday, June 6, 2020 at 3:35:27 AM UTC-4 Tamás Gulácsi wrote:
> Use 1<<31 instead of 1024.
> And ifthe C side won't modify/free the *uchar, then you don't need the
> copy.
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