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doslang-mirror/fec/tests/own/badarg.fe
T
coolguy 547d8c5ec2 fix: reconcile the ERROR markers with what the checker reports
Checking the markers for the first time found five disagreements in areas that
are implemented. Four were the marker's fault:

- own/badarg pinned "self", but the rule being broken is that a returned
  reference must derive from a parameter -- `self` has nothing to do with it.
- own/badbrmov pinned line 9, which is the closing brace; the second destroy is
  on line 8.
- own/badloop pinned line 8, the destroy after the loop. The diagnostic is on
  line 6, inside it, and line 6 is right: the second iteration moves the same
  value again, so the loop body is where it is caught. Whoever wrote the marker
  expected the error after the loop.
- optional/badcatch pinned line 14, the body of the catch block. The catch
  expression on line 13 is what cannot fall through.

The fifth was the compiler's. own/badweak assigns a `&mut i32` to a `&i32` and
got "initializer type mismatch", which says nothing about why. Weakening an
exclusive borrow to a shared one is a specific rule and now says so, for
references and slices alike.

own/ is fully green: 50/50. Overall 133 -> 138 of 188. The six remaining marker
disagreements are all under units/ and generic/, where nothing is implemented
yet, so there is no diagnostic to compare against and no way to tell whether
the marker is right.
2026-08-17 03:42:06 +09:00

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// ERROR:8:derived from a parameter
unit badarg;
struct Box {
value: i32,
fn bad(self: &Self, other: &i32) -> &i32 {
return other;
}
}