problems parsing prof file

[flip111]

old way of doing things

» cat wai-test.prof | ghc-prof-flamegraph > wai-test.folded
ghc-prof-flamegraph: Malformed .prof file: couldn't find start line
CallStack (from HasCallStack):
  error, called at ghc-prof-flamegraph.hs:29:17 in main:Main

new way

» ghc-prof-flamegraph wai-test.prof

Just gets stuck .. doesn't terminate

for prof file see attachment
wai-test.prof.txt

ghc-prof-flamegraph was build with lts-9.18

[fosskers]

Just experienced the same thing.

[mitchellwrosen]

Are you running the latest version? HEAD (commit f1d7bfc) works fine for me.

[flip111]

I was using ghc-prof-flamegraph of lts-9.18 .. i don't think it's HEAD because stack lags behind a little bit. When you say it works fine for you, do you mean with the wai-test.prof.txt file i attached?

[mitchellwrosen]

@flip111 Yeah.

> ghc-prof-flamegraph wai-test.prof.txt
Output written to /home/mitchell/wait-test.prof.svg

[flip111]

ok great. Looks like ghc-prof-flamegraph is not directly on stackage and i was using version 0.1.2.1 of ghc-prof-flamegraph which is the latest one at hackage.

Perhaps a new release can be made and this issue can be closed?

EDIT: perhaps first merge #11 before a new release

[flip111]

@mgsloan now that #11 is merged, can a new release be put on stackage?