63 lines
2.2 KiB
Rust
63 lines
2.2 KiB
Rust
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// xfail-win32 Broken because of LLVM bug: http://llvm.org/bugs/show_bug.cgi?id=16249
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// compile-flags:-Z extra-debug-info
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// debugger:break zzz
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// debugger:run
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// debugger:finish
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// debugger:print the_a->val
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// check:$1 = {{TheA, x = 0, y = 8970181431921507452}, {TheA, 0, 2088533116, 2088533116}}
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// debugger:print the_b->val
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// check:$2 = {{TheB, x = 0, y = 1229782938247303441}, {TheB, 0, 286331153, 286331153}}
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// debugger:print univariant->val
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// check:$3 = {-9747455}
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// The first element is to ensure proper alignment, irrespective of the machines word size. Since
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// the size of the discriminant value is machine dependent, this has be taken into account when
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// datatype layout should be predictable as in this case.
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enum ABC {
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TheA { x: i64, y: i64 },
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TheB (i64, i32, i32),
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}
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// This is a special case since it does not have the implicit discriminant field.
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enum Univariant {
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TheOnlyCase(i64)
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}
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fn main() {
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// In order to avoid endianess trouble all of the following test values consist of a single
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// repeated byte. This way each interpretation of the union should look the same, no matter if
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// this is a big or little endian machine.
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// 0b0111110001111100011111000111110001111100011111000111110001111100 = 8970181431921507452
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// 0b01111100011111000111110001111100 = 2088533116
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// 0b0111110001111100 = 31868
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// 0b01111100 = 124
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let the_a = @TheA { x: 0, y: 8970181431921507452 };
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// 0b0001000100010001000100010001000100010001000100010001000100010001 = 1229782938247303441
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// 0b00010001000100010001000100010001 = 286331153
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// 0b0001000100010001 = 4369
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// 0b00010001 = 17
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let the_b = @TheB (0, 286331153, 286331153);
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let univariant = @TheOnlyCase(-9747455);
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zzz();
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}
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fn zzz() {()} |