29a4891374
Impl blocks are anonymous (no declName), so a parameterised-protocol impl in a module reached via a diamond import was appended once per path and registered twice — 'duplicate impl Into for source s64'. mergeFlat and the directory-import merge loop now also dedup by node pointer; a physical AST node is lowered once regardless of how many import paths reach it. Regression: examples/issue-0056-diamond-param-impl.sx.
20 lines
782 B
Plaintext
20 lines
782 B
Plaintext
// Regression (issue 0056): a parameterised-protocol (`Into`) impl living in a
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// module reached through more than one import path must register exactly once.
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//
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// main ─┬─ issue-0056/mid_a ─┐
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// └─ issue-0056/mid_b ─┴─ issue-0056/common (holds `impl Into(Wrapped) for s64`)
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//
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// Impl blocks are anonymous (no `declName`), so before the fix the diamond
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// dedup in imports.zig appended the cached node once per path and the second
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// registration tripped: `duplicate impl 'Into' for source 's64'`. Now the flat
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// decl list also dedups by node identity, so this builds and prints 7.
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#import "modules/std.sx";
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#import "issue-0056/mid_a.sx";
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#import "issue-0056/mid_b.sx";
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main :: () -> s32 {
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w : Wrapped = xx 7;
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print("{}\n", w.v);
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0;
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}
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