HPC: do notation marks () as non-covered
With this Main.hs, the "()" in "pure ()" is marked by HPC as a non-covered expression:
foo :: IO ()
foo = do
_ <- putStrLn "Unimportant string"
pure ()
main :: IO ()
main = do
foo
putStrLn "Unimportant #2"
Repro:
ghc -fhpc Main.hs
./Main
hpc markup Main.tix
This is an admittedly small issue, but it can be valuable for a project to aspire to 100% code coverage and false negatives prevent us from getting there.
Trac metadata
Trac field | Value |
---|---|
Version | 8.2.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Code Coverage |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |