getDirectoryContents fails in GHC 6.5 snapshots, works in GHC 6.4.1 snapshots

[Sigbjorn Finne]

Mystery now solved (*), nightly builds should now behave a bit better
when it comes to directory handling.

--sigbjorn

* - gcc-3.4.* mingw builds hard-codes default include search paths
     referring to /mingw/. My local box happened to contain an older mingw
     dist in that location, leading to confusion about the layout of 'struct 
dirent'.

----- Original Message ----- 
From: "Sigbjorn Finne" <sof at galois.com>
To: <brian-l-smith at uiowa.edu>
Cc: <glasgow-haskell-bugs at haskell.org>
Sent: Monday, August 08, 2005 10:38
Subject: Re: getDirectoryContents fails in GHC 6.5 snapshots,works in GHC 
6.4.1 snapshots


>I can repro it too. Looks as if the dirent.h implementation of the
> mingw snapshot that the nightlies are using is spongled. Simple
> stuff like
>
> #include <stdio.h>
> #include <errno.h>
> #include <dirent.h>
> int main()
> {
>  DIR* dp;
>  struct dirent* de;
>
>  dp = opendir("c:\\");
>  while (de = readdir(dp)) {
>      printf("%s\n",de->d_name);
>  }
>  closedir(dp);
>  return 0;
> }
>
> fails. I'll upgrade and see if that improves matters.
>
> --sigbjorn
>
> ----- Original Message ----- 
> From: "Brian Smith" <brianlsmith at gmail.com>
> To: <glasgow-haskell-bugs at haskell.org>
> Sent: Monday, August 08, 2005 10:31
> Subject: Re: getDirectoryContents fails in GHC 6.5 snapshots,works in GHC 
> 6.4.1 snapshots
>
>
>> On 8/8/05, Simon Marlow <simonmar at microsoft.com> wrote:
>>> On 29 July 2005 23:53, Brian Smith wrote:
>>>
>>> > On 7/20/05, Brian Smith <brianlsmith at gmail.com> wrote:
>>> >> This bug breaks Cabal 1.0 and Cabal 1.1.1.
>>> >> Expected results: passed
>>> >> Actual results: *** Exception: c:\: getDirectoryContents: failed (No
>>> >> error)
>>> >>
>>> I tried various versions and couldn't reproduce the error.  I tried:
>>
>> Yes, it fails for every directory. I actually noticed the problem by
>> when using Cabal, which uses getDirectoryContents. But, I did some
>> more testing. This works:
>>
>>    > ghc --make Main.lhs -o main
>>    > main
>>    passed
>>
>> But, this fails:
>>
>>    > ghci Main.lhs
>>    Prelude Main> main
>>        *** Exception: C:\temp\bugs\getDirectoryContents:
>> getDirectoryContents: failed (
>> No error)
>>
>> and this fails:
>>
>>    > runghc Main.lhs
>>    *** Exception: C:\temp\bugs\getDirectoryContents:
>> getDirectoryContents: failed (
>> No error)
>>
>> This indicates to me that there is not any problem with my filesystem.
>> Instead, it seems like it is likely a problem with the linker. Now, I
>> see what the cause of the problem is:
>>
>> http://www.haskell.org//pipermail/cvs-ghc/2005-June/025579.html
>> Sigbjorn Finne sof at galois.com wrote on Mon Jun 20 12:29:24 EDT 2005:
>>> I'll switch over to using gcc-3.4.2 for the nightly builds to see where 
>>> takes us.
>>
>> And, in my previous message I wrote:
>>
>>> Build 20050620 works fine, but Build 20050622 fails.
>>> I noticed that on 2005-06-21 the build failed. I also noticed that
>>> before 2005-06-21, the tar.gz's are ~1 larger than the ones after
>>> 2005-06-21.
>>
>> - Brian
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