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sx/examples/errors/1007-errors-inferred-widening-reject.sx
agra 66bdc70bf1 test: group examples into per-category folders
Move examples/*.sx and their expected/ snapshots into per-category
subfolders (examples/<category>/...). Folder = leading filename token,
with ffi-objc/ffi-jni kept whole; filenames are unchanged. The corpus
runner and LSP sweep now discover each category's expected/ dir, while
issues/ stays flat. Example 1058's repo-root-relative companion import
is made file-relative. Path strings embedded in 164 snapshots were
regenerated (path-only changes). Test-layout docs in CLAUDE.md updated.
2026-06-21 14:41:34 +03:00

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// Inferred-set widening rejection (ERR step E1.4b). When a named caller
// (`-> !A`) `try`s a bare-`!` callee, the callee's WHOLE-PROGRAM-CONVERGED
// inferred set must be a subset of A. Before the SCC pass this was a
// false-negative (the bare-`!` placeholder was empty, so the check trivially
// passed); now the converged tags are checked. `deep`'s converged set is
// {Foo} (raised transitively through `via`), which is not in A = {Bar}.
// The positive case lives in `examples/223-inferred-error-sets.sx`.
#import "modules/std.sx";
A :: error { Bar }
deep :: () -> ! {
raise error.Foo; // deep's inferred set = {Foo}
}
via :: () -> ! {
try deep(); // via absorbs {Foo}
return;
}
caller :: () -> !A {
try via(); // error: Foo (via's converged set) not in A
return;
}
main :: () -> i32 {
e := caller();
return 0;
}