33a6f5c650
Incomplete WIP from a worker killed at the 55-min wall (large blast radius: core source-pin + ~8 example migrations + ~10 library module migrations). Committed so the resumed session continues on a clean tree. May not build.
27 lines
1.0 KiB
Plaintext
27 lines
1.0 KiB
Plaintext
// Duplicate impl detection — two impls for the same (Source, Target)
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// pair are both visible from the same `xx` site (because both their
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// defining modules are transitively imported). The compiler must
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// emit a "duplicate xx conversion" diagnostic naming both modules,
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// not silently pick one or the other.
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//
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// Setup:
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// - 180-impl-duplicate-impl-a.sx: `impl Into(Wrap) for s64` (mul by 10).
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// - 180-impl-duplicate-impl-b.sx: `impl Into(Wrap) for s64` (add 100).
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// - Main imports both; the `xx 7 : Wrap` site must error.
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//
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// Expected exit = 1, expected output = the focused diagnostic naming
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// both impl modules.
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#import "modules/std.sx";
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// `Wrap` is declared in the shared types module; bare-import visibility is
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// non-transitive, so naming it here means importing it here (not via impl-a/b).
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#import "./0411-protocols-impl-duplicate-types.sx";
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#import "./0411-protocols-impl-duplicate-impl-a.sx";
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#import "./0411-protocols-impl-duplicate-impl-b.sx";
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main :: () -> s32 {
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w : Wrap = xx 7;
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print("w.v = {}\n", w.v);
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0
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}
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