Give civilised error messages when desugaring Template Haskell brackets
DsMeta fails with a panic if it encounters something it can't desugar into TH syntax. This is bad: the error should be civilised. But there's no current provision for desugarer *errors*, only *warnings*.
Add errors, and perhaps promote the error/warning box into the part that is shared between all uses of IOEnv (renamer, typechecker, desugarer)
Nothing hard, a bit tedious.
Trac metadata
Trac field | Value |
---|---|
Version | 6.4.1 |
Type | Task |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | Unknown |
Architecture | Unknown |