Fix MonadFail warnings
#10751 (closed) implements the MonadFail warning mechanism.
Using -fwarn-missing-monadfail-instance, GHC's internal warnings created by the patch can be shown and fixed.
A second pass with -XMonadFailDesugaring then provides a hard check on whether any issues remain, by switching on the new desugaring mechanism properly.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.11 |
| Type | Task |
| TypeOfFailure | OtherFailure |
| Priority | low |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | #10751 (closed) |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |