ghc --show-options lists invalid flags
While porting ghc-mod to GHC 8 I noticed that all -fwarn
flags are missing from flagsForCompletion
instead only -fwarn-
and -fno-warn-
appear. This also shows up in the front-end when running ghc --show-options
.
Looking at the code this turned out to be because the old -fwarn
flags were marked as hidden using hideFlag
and hidden flags are explicitly filtered out in flagsForCompletion
but for some reason the -fwarn-
and -fno-warn-
prefixes still show up in the list.
Trac metadata
Trac field | Value |
---|---|
Version | 8.0.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |