Way too long, and unhelpful, error message
GHC is repeating this nice ~140 line mdo-expression, twice, leading to annoying scrolling:
The error message
Frisby.hs:142:5:
Couldn't match expected type `[Char]' with actual type `()'
Expected type: P s0 [Char]
Actual type: P s0 ()
could also be more helpful, it appears to always point to the last binding statement of the block.
NB: The code is probably *very* incorrect, I just hand-translated it from another grammar format and was hunting down errors when coming across this one.
Trac metadata
Trac field | Value |
---|---|
Version | 7.4.2 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |