hWaitForInput does not work on linux.
hWaitForInput does not work on linux. When hWaitForInput has non-zero waiting time, it always fails. The code is following ghci-code. This is because inputReady.c (https://github.com/ghc/ghc/blob/ghc-8.0/libraries/base/cbits/inputReady.c#L27) does not allow 'msecs != 0'.
$ ghci
GHCi, version 8.0.2: http://www.haskell.org/ghc/ :? for help
Prelude> :m + System.IO
Prelude System.IO> f <-openFile "stack.yaml" ReadMode
Prelude System.IO> hWaitForInput f 10
fdReady: msecs != 0, this shouldn't happenAborted (core dumped)
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 | Unknown/Multiple |
Architecture |