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Added test case

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This commit is contained in:
Jimmi HC 2019-01-06 17:58:00 +01:00
parent 55e95daf54
commit 97702988d1
1 changed files with 16 additions and 0 deletions
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16
test/cases/ptrcast.zig
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@ -34,3 +34,19 @@ fn testReinterpretBytesAsExternStruct() void {
var val = ptr.c;
assertOrPanic(val == 5);
}
test "reinterpret struct field at comptime" {
const numLittle = comptime Bytes.init(0x12345678);
assertOrPanic(std.mem.eql(u8, []u8{ 0x78, 0x56, 0x34, 0x12 }, numLittle.bytes));
}
const Bytes = struct {
bytes: [4]u8,
pub fn init(v: u32) Bytes {
var res: Bytes = undefined;
@ptrCast(*align(1) u32, &res.bytes).* = v;
return res;
}
};