#8133: T7881 fails with hpc ----------------------------------+-------------------------- Reporter: jstolarek | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Code Coverage | Version: 7.7 Keywords: | Operating System: Linux Architecture: x86_64 (amd64) | Type of failure: Other Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ----------------------------------+-------------------------- I noticed that T7881 fails with `hpc` way. I investigated a bit and I noticed that if I compile the program without hpc it emits 3 warnings (which is intended): {{{ [t-jastol@cam-05-unx : /5playpen/t-jastol/ghc- validate2/testsuite/tests/numeric/should_compile] '/5playpen/t-jastol/ghc- validate2/inplace/bin/ghc-stage2' -fforce-recomp -c T7881.hs -O T7881.hs:7:6: Warning: Enumeration is empty T7881.hs:25:6: Warning: Enumeration is empty T7881.hs:31:6: Warning: Enumeration is empty }}} But if I add `-fhpc` on the command line the warnings disappear: {{{ [t-jastol@cam-05-unx : /5playpen/t-jastol/ghc- validate2/testsuite/tests/numeric/should_compile] '/5playpen/t-jastol/ghc- validate2/inplace/bin/ghc-stage2' -fforce-recomp -c T7881.hs -O -fhpc [t-jastol@cam-05-unx : /5playpen/t-jastol/ghc- validate2/testsuite/tests/numeric/should_compile] }}} That's the reason why this test fails (mismatch of stderr). I don't know whether this is expected behaviour of hpc or not. If the former, then test configuration should be fixed, if the latter then hpc itself should be fixed. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8133 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler