strace breaks cabal - how to find the problem?

[Brandon S. Allbery KF8NH]

On 2009 Mar 25, at 9:12, Simon Marlow wrote:
> Robin Green wrote:
> This sounds slightly familiar.  The System.Process library uses  
> vfork() on Unix systems, which as it turns out helps to avoid some  
> race conditions. However, while debugging something in this area  
> recently (using strace) I remember seeing different behaviour when  
> running under strace.  I suspect that strace is doing something to  
> vfork().

strace and vfork don't mix; vfork uses a hack that won't work right  
when tracing is enabled.

-- 
brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery at kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university    KF8NH


-------------- next part --------------
A non-text attachment was scrubbed...
Name: PGP.sig
Type: application/pgp-signature
Size: 195 bytes
Desc: This is a digitally signed message part
Url : http://www.haskell.org/pipermail/glasgow-haskell-users/attachments/20090325/5cc5a4b6/PGP.bin