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behavior: test @bitCast of packed struct of bools

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This seems to have resolved itself now.
Tested on x86_64 using debug optimize mode.

Closes #9851
This commit is contained in:
r00ster91 2023-07-02 10:01:18 -04:00 committed by Andrew Kelley
parent cb5a6be41a
commit 2583a39fb6
1 changed files with 44 additions and 0 deletions
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44
test/behavior/bitcast.zig
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@ -459,3 +459,47 @@ test "bitcast nan float does modify signaling bit" {
try expectEqual(math.nan_u128, @as(u128, @bitCast(snan_f128_var)));
try expectEqual(math.nan_u128, bitCastWrapper128(snan_f128_var));
}
test "@bitCast of packed struct of bools all true" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest; // TODO
const P = packed struct {
b0: bool,
b1: bool,
b2: bool,
b3: bool,
};
var p = std.mem.zeroes(P);
p.b0 = true;
p.b1 = true;
p.b2 = true;
p.b3 = true;
try expect(@as(u8, @as(u4, @bitCast(p))) == 15);
}
test "@bitCast of packed struct of bools all false" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest; // TODO
const P = packed struct {
b0: bool,
b1: bool,
b2: bool,
b3: bool,
};
var p = std.mem.zeroes(P);
p.b0 = false;
p.b1 = false;
p.b2 = false;
p.b3 = false;
try expect(@as(u8, @as(u4, @bitCast(p))) == 0);
}