body:    `s := "a"; r := C.f23(*(*C.gostring23)(unsafe.Pointer(&s))); if *(*string)(unsafe.Pointer(&r)) != s { panic(r) }`,
	},
	{
		// Passing a slice of Go strings fails.
		name:    "passstringslice",
		c:       `void f24(void *p) {}`,
		imports: []string{"strings", "unsafe"},
		support: `type S24 struct { a [1]string }`,
		body:    `s := S24{a:[1]string{strings.Repeat("a", 2)}}; C.f24(unsafe.Pointer(&s.a[0]))`,