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stage2: bit_not on u0 is always 0

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This commit is contained in:
Mitchell Hashimoto 2022-03-16 21:22:02 -07:00 committed by Andrew Kelley
parent 1af51a0833
commit 79d3780fbd
2 changed files with 8 additions and 0 deletions
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5
src/value.zig
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@ -2977,6 +2977,11 @@ pub const Value = extern union {
const info = ty.intInfo(target);
if (info.bits == 0) {
assert(val.isZero()); // Sema should guarantee
return val;
}
// TODO is this a performance issue? maybe we should try the operation without
// resorting to BigInt first.
var val_space: Value.BigIntSpace = undefined;

3
test/behavior/math.zig
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@ -375,6 +375,9 @@ test "binary not" {
try expect(comptime x: {
break :x ~@as(u64, 2147483647) == 18446744071562067968;
});
try expect(comptime x: {
break :x ~@as(u0, 0) == 0;
});
try testBinaryNot(0b1010101010101010);
}