RE: calling back to Haskell from several C threads

On 14 April 2005 20:52, Simon Marlow wrote:

> On 12 April 2005 15:32, Bulat Ziganshin wrote:
> 
>> attached program crashes under GHC-6.2.1/mingw32 and GHC-6.4/mingw32
>> 
>> algorithm:
>> 
>> 1. we create several threads with forkOS
>> 2. each thread calls C function
>> 3. C function in each thread made several calls back to Haskell
>> 4. called Haskell functions do some work with memory
>> 5. all these threads ended because C functions returns
>> 6. we create another several threads...
>> 
>> after repeating these steps several times program crashes
> 
> That shouldn't happen.  Thanks for sending the test program, I'll
> take a look next week.

It's a bug, thanks for the report.  I've fixed it in CVS; if you can
build from source then grab the 6.4 branch from CVS or use a snapshot
from tonight's build.

Cheers,
        Simon