Windows 10上的GHC -fhpc代码覆盖率

Question

I'm trying to check code coverage for my tasty unit tests. I found a way to do it in the GHC docs user guide for hpc . The problem is that ghc -fhpc Myfile.hs doesn't generate a .hpc subdirectory or any .tix file, as the documentation claims it to do. Subsequently, I cannot run hpc report .

What am I missing? Does this not work on Windows?

Answer 1

Apparently, removing all *.hi and *.o files, forcing the compiler to recompile, worked. I really think the compiler should've noticed the flag, and that some files were missing.

https://ghc.haskell.org/trac/ghc/ticket/11798