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add test for @sizeOf on extern and packed unions

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This commit is contained in:
Andrew Kelley 2017-12-04 02:04:08 -05:00
parent 942b250895
commit 084911d9b3
1 changed files with 16 additions and 0 deletions
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16
test/cases/union.zig
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@ -150,3 +150,19 @@ fn testEnumWithSpecifiedAndUnspecifiedTagValues(x: &const MultipleChoice2) {
});
}
const ExternPtrOrInt = extern union {
ptr: &u8,
int: u64
};
test "extern union size" {
comptime assert(@sizeOf(ExternPtrOrInt) == 8);
}
const PackedPtrOrInt = packed union {
ptr: &u8,
int: u64
};
test "extern union size" {
comptime assert(@sizeOf(PackedPtrOrInt) == 8);
}