8c59acbd25
The const-decl alias-registration path treated a qualified generic head (`ABox :: a.Box(s64)`) only as a gate exemption, then read the bare last-wins `struct_template_map` — so `ABox` and `BBox` both instantiated whichever same-name template won globally (both size 16). attempt-9 routed the annotation head sites through `qualifiedStructTemplate`; this applies the same selection to the two alias-registration branches (.call and .parameterized_type_expr) before the bare fallback, and extracts the shared instantiate-and-register logic into `registerGenericStructAlias`. ABox :: a.Box(s64) now resolves to a's template (size 8); BBox :: b.Box(s64) to b's (size 16). Regression 0773 pins it (fail-before alias a=16 b=16, after a=8 b=16).
29 lines
1.3 KiB
Plaintext
29 lines
1.3 KiB
Plaintext
// A type alias whose RHS is a qualified generic head `ns.Box(args)` must
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// instantiate the template AUTHORED by `ns`'s module — not the global same-name
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// template that won the last-wins `struct_template_map`. Two namespaces each
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// author a same-name generic `Box($T)` with a DIFFERENT layout (a: one field,
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// b: two fields). `ABox :: a.Box(s64)` and `BBox :: b.Box(s64)` must register
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// aliases over their OWN module's template (sizes 8 and 16) and stay DISTINCT,
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// so the field unique to b's layout (`y`) is reachable only through `BBox`.
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//
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// Regression (Phase E4): before the alias-registration path selected the
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// qualified author, the const-decl alias `.call` branch stripped the head to the
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// bare name and read the global `struct_template_map`, so `ABox` and `BBox` both
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// instantiated the last-wins template (both size 16). attempt-9 fixed the
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// annotation head sites; this pins the alias-registration sibling.
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#import "modules/std.sx";
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a :: #import "0773-modules-qualified-generic-alias-author/a.sx";
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b :: #import "0773-modules-qualified-generic-alias-author/b.sx";
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ABox :: a.Box(s64);
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BBox :: b.Box(s64);
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main :: () -> s32 {
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ab : ABox = .{ x = 1 };
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bb : BBox = .{ x = 10, y = 20 };
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print("alias a={} b={}\n", size_of(ABox), size_of(BBox));
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print("ab.x={} bb.x={} bb.y={}\n", ab.x, bb.x, bb.y);
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0
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}
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