Hi all,

I'm trying to step through some ghc code.

I am trying to use pprTrace ( for the first time ) and I keep getting an error when I use it :

I've added it to the file ghc/Main.hs and the resulting code is this :

let argv1' = map (mkGeneralLocated "on the commandline") argv1

(argv2, staticFlagWarnings) <- pprTrace "argv1 prime" (ppr argv1') $ parseStaticFlags argv1'

I want to examine the value of argv1'.

After my modification, I go into the ghc/ folder and run : 'make'

But doing this leads to an error when I try to run the program :

ghc-stage2: panic! (the 'impossible' happened)

(GHC version 7.11.20150810 for x86_64-unknown-linux):

Static flags have not been initialised!

Please call GHC.parseStaticFlags early enough.

What am I doing wrong ?

Omar Mefire,