c185dbdd13
Diagnostics example for the bare-declare guard (14f30f3): an unfinished
declare("Undef") -> build-gating error naming the type, exit 1.
15 lines
565 B
Plaintext
15 lines
565 B
Plaintext
// A `declare("X")` that is never completed by `define(handle, info)` is rejected
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// loudly. `declare` mints an empty (undefined) nominal slot; without a matching
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// `define` it has zero variants, which is never a usable type — sizing /
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// constructing it would otherwise panic at codegen. The diagnostic names the
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// type and points at the bare `declare` so the missing `define` is obvious.
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#import "modules/std.sx";
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#import "modules/std/meta.sx";
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Undef :: declare("Undef"); // never define()d
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main :: () -> i32 {
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x : Undef = ---;
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return 0;
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}
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