Method cStringPtr

gl/work.go:165–173

cStringPtr creates a pointer to a C string off the Go heap. ret is a **char.

(str string)

// cStringPtr creates a pointer to a C string off the Go heap.
// ret is a **char.
func (ctx *context) cStringPtr(str string) (uintptr, func()) {
	s, free := ctx.cString(str)
	ptr := C.malloc(C.size_t(unsafe.Sizeof((*int)(nil))))
	*(*uintptr)(ptr) = s
	return uintptr(ptr), func() {
		free()
		C.free(ptr)
	}
}