[jhc] jhc 0.8 internal error (LetFloat)

[John Meacham]

sure, if you could post the source, that would be useful.

Whenever encountering a bug like this, it is good to clear your cache
(./jhc --purge-cache, which will delete all your .ho files) and
recompile with '-flint' on the command line. that will run the
typechecker after every transformation so will catch bugs earlier.
Depending on the type of bug, -fe-verbose will not pretty print the
output names so you will get the original mangled ones, harder to
read, but if you need to correlate code between two core dumps it is
handy.

Ideally, we will be able to capture a before and after pair of dumps.

    John

On Sat, Feb 11, 2012 at 1:32 PM, Roman Cheplyaka <roma at ro-che.info> wrote:
> jhc --build-hl regex-applicative.yaml
> jhc 0.8.0 (mydniquipepo-32)
> Creating library from description file: "regex-applicative.yaml"
> Reading: "regex-applicative.yaml"
> Finding Dependencies...
> Using Ho Cache: '/home/feuerbach/.jhc/cache'
> Text.Regex.Applicative  [./Text/Regex/Applicative.hs]
> Text.Regex.Applicative.Interface [./Text/Regex/Applicative/Interface.hs]
> Text.Regex.Applicative.Object [./Text/Regex/Applicative/Object.hs]
> Text.Regex.Applicative.Compile [./Text/Regex/Applicative/Compile.hs] <~/.jhc/cache/kb3lu73uegff4f51c0lq30kqlr.ho>
> Text.Regex.Applicative.Types [./Text/Regex/Applicative/Types.hs] <~/.jhc/cache/kgtlpnnmdsr78aljjmcqn6s0ti.ho>
> Text.Regex.Applicative.StateQueue [./Text/Regex/Applicative/StateQueue.hs] <~/.jhc/cache/sp3vi8t4kqgsfurdlkpa71sjp9.ho>
> Fresh: <~/.jhc/cache/kgtlpnnmdsr78aljjmcqn6s0ti.ho>
> Fresh: <~/.jhc/cache/kb3lu73uegff4f51c0lq30kqlr.ho>
> Fresh: <~/.jhc/cache/sp3vi8t4kqgsfurdlkpa71sjp9.ho>
> Typechecking...
> [1 of 3] Text.Regex.Applicative.Object(.............................................)
> [2 of 3] Text.Regex.Applicative.Interface(.............................................)
> [3 of 3] Text.Regex.Applicative(.............................................)
> Compiling...
> [1 of 3] Text.Regex.Applicative.Object<.....................
>>>> Exception thrown
> Writing: hs.out_lint-before-FloatOutward-Init.jhc_core
> LetFloat: could not find x38630396::Unknown
> Internal Error
>
> I attached the generated core file. I can also publish the source code that
> triggered the bug, if it helps.
>
> --
> Roman I. Cheplyaka :: http://ro-che.info/
>
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