c21b683b08
Each banner was re-verified against the current binary (repro now behaves correctly) and cites the actual fix location in current src/** plus the covering regression example. Closes the stale-but-fixed backlog: 0019, 0042-0056, 0131. No compiler change.
36 lines
1.9 KiB
Markdown
36 lines
1.9 KiB
Markdown
# 0019 — `#import` is non-transitive (C-function scope across files)
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> **RESOLVED.** The `.md`'s own repro is non-runnable (relative `../modules/std.sx`
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> imports) and superseded; the scenario — A importing B does NOT transitively expose
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> a third module's top-level names — is enforced by the non-transitive `#import`
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> visibility check in `lowerCall` (src/ir/lower/call.zig:106-118, gated on
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> `isNameVisible`, defined in src/ir/lower/decl.zig:2502), with the const-reference
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> path mirrored in src/ir/lower/expr.zig. Covered by the passing regression test
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> `examples/0706-modules-import-non-transitive.sx`.
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> **Status: superseded — kept for reference.** Relocated from the old
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> `examples/issue-0019/` fixture during the test-layout migration. The behavior
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> it probed (A imports B and C; C must NOT see B's `extern` C functions just
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> because A imported B) is now covered by the passing test
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> `examples/0706-modules-import-non-transitive.sx`.
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## What it probed
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`main` imports both `c_wrapper.sx` (which declares C `extern` functions) and
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`other.sx`. `other.sx` should *not* gain access to `c_wrapper`'s C functions
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transitively — using one should produce the "not visible; #import the module that
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declares it" diagnostic.
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- `main_good.sx` — the valid arrangement.
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- `main_bad.sx` — the arrangement that must be rejected.
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- `c_wrapper.sx`, `other.sx` — the imported modules.
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## Caveat (why it doesn't run as-is)
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The fixture uses **relative** imports (`#import "../modules/std.sx"`), which only
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resolve relative to a specific working directory and violate the project's
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"always `package:`/module-path imports, never relative" rule. It is not runnable
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from the repo root and is not wired into the suite. If revived, rewrite the
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imports to the standard `modules/...` form and pin expected output; otherwise it
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can be deleted (the scenario is already covered by `0706-modules-import-non-transitive`).
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