ec358d6db5
Previously `@as(i64, undefined) +% 1` would produce `@as(@TypeOf(undefined), undefined)` which now gives `@as(i64, undefined)`. Previously `@as(i64, undefined) +| 1` would hit an assertion which now gives `@as(i64, undefined)`.
39 lines
990 B
Zig
39 lines
990 B
Zig
comptime {
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const undef: i64 = undefined;
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const not_undef: i64 = 32;
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// If either of the operands are zero, the result is zero.
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@compileLog(undef * 0);
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@compileLog(not_undef * 0);
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@compileLog(0 * undef);
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@compileLog(0 * not_undef);
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// If either of the operands are one, the result is the other
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// operand, even if it is undefined.
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@compileLog(undef * 1);
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@compileLog(not_undef * 1);
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@compileLog(1 * undef);
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@compileLog(1 * not_undef);
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// If either of the operands are undefined, it's a compile error
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// because there is a possible value for which the addition would
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// overflow (max_int), causing illegal behavior.
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_ = undef * undef;
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}
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// error
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// backend=stage2
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// target=native
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//
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// :21:17: error: use of undefined value here causes undefined behavior
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//
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// Compile Log Output:
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// @as(i64, 0)
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// @as(i64, 0)
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// @as(i64, 0)
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// @as(i64, 0)
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// @as(i64, undefined)
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// @as(i64, 32)
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// @as(i64, undefined)
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// @as(i64, 32)
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