FunDep origin not correctly attributed
In TcInteract.improveTopFunEqs we do not give the derived constraints an origin of FunDepOrigin. As a result, dropDerivedSimples will discard even an insoluble constraint arising from a fundep. In contrast class instance fundeps do have FunDepOrigin and are kept.
This is at least inconsistent. And we get less good error messages.
Shows up in tests T13651, TR8450, T13506, T14325`.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 8.2.2 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |