Opened 5 years ago

Last modified 19 months ago

#3191 new bug

hpc reports spurious results with .lhs files even after processing with ghc -E

Reported by: dominic Owned by: andy@…
Priority: lowest Milestone: 7.6.2
Component: Code Coverage Version: 6.10.2
Keywords: Cc:
Operating System: Unknown/Multiple Architecture: Unknown/Multiple
Type of failure: Difficulty: Unknown
Test Case: Blocked By:
Blocking: Related Tickets:

Description

I've done a bit of investigation and it seems there are at least two problems:

  1. I have literate haskell files (.lhs).
  1. Even if I run them through the pre-processor (ghc -E) they still don't work

but if I manually remove these lines (which seem to get inserted by the
pre-processor)

{-# LINE 1 "ASNTYPE.lhs" #-}
#line 1 "ASNTYPE.lhs"

then it does actually work.

I still have a problem with another project which doesn't use literate haskell
but does require the use of -cpp and has got #ifdef's. I haven't got to the
bottom of it yet but I'm suspicious that lines starting with # cause hpc to
misbehave.

It's strange that hpc should behave like this as I would have thought it
wouldn't care about hs / lhs and # as ghc would have done some of its standard
processing before hpc got engaged.

This happens on linux and windows (not surprisingly).

Change History (9)

comment:1 Changed 5 years ago by igloo

  • Difficulty set to Unknown

See also #2991.

comment:2 Changed 5 years ago by igloo

  • Milestone set to 6.12 branch

comment:3 Changed 4 years ago by igloo

  • Milestone changed from 6.12 branch to 6.12.3

comment:4 Changed 4 years ago by igloo

  • Milestone changed from 6.12.3 to 6.14.1
  • Priority changed from normal to low

comment:5 Changed 3 years ago by igloo

  • Milestone changed from 7.0.1 to 7.0.2

comment:6 Changed 3 years ago by igloo

  • Milestone changed from 7.0.2 to 7.2.1

comment:7 Changed 3 years ago by igloo

  • Milestone changed from 7.2.1 to 7.4.1

comment:8 Changed 2 years ago by igloo

  • Milestone changed from 7.4.1 to 7.6.1
  • Priority changed from low to lowest

comment:9 Changed 19 months ago by igloo

  • Milestone changed from 7.6.1 to 7.6.2
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