Dean, Command cgo https://golang.org/cmd/cgo/#hdr-Go_references_to_C
In C, a function argument written as a fixed size array actually requires a pointer to the first element of the array. C compilers are aware of this calling convention and adjust the call accordingly, but Go cannot. In Go, you must pass the pointer to the first element explicitly: C.f(&C.x[0]). Peter On Thursday, April 30, 2020 at 2:17:37 PM UTC-4, Dean Schulze wrote: > > I must be missing something pretty simple, but I have a C struct like this: > > typedef struct line > { > char hostname[HOSTNAME_MAX]; > char ip[IP_MAX]; > ... > } > > When I try to do the simple thing > > C.GoString(p.hostname) > > I get an error like > > cannot use p.hostname (type [25]_Ctype_char) as type *_Ctype_char in > argument to _Cfunc_GoString > > I've seen some examples but they all rely on *C.char and I haven't found > any way to get a [25]_Ctype_char to a pointer representation. > > What do I need to do to convert a char[] to []byte of string in Go? > > -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/e61da6dc-aeaf-4f13-8ba2-937e6f058943%40googlegroups.com.