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-fdefer-type-errors and -fdefer-typed-holes flag do not perform their roles

with -fdefer-type-errors flag\\

Prelude > let f = [True | x <- [_,_]] raise two warning. Good!.\\ Prelude > f\\ [True, True]\\ With this function \\ Prelude> let f' = [True | x <- [_, _]] in f'\\ GHCi raise two errors. It is not clear!

idem with -fdefer-typed-holes flag\\ If you compile, there is a warning and of course no result and after linking an error is raise. This situation is not clear for me.\\ Logically it should have a result.\\ logically the function f and the function f' send a result.\\ Typed Holes worsens in this case

Trac metadata
Trac field Value
Version 8.0.2
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture
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