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Zig

4 years ago
const std = @import("std");
const assert = std.debug.assert;
test "null @intToPtr" {
// the ? means that the pointer can be null. If you remove it, the test
// fails because you're trying to set a null pointer.
//
// the 0 can also be written 0x0 but I don't know if there's any practical
// difference.
const ptr = @intToPtr(?*i32, 0);
assert(ptr == null);
}