[fpc-pascal] GUI multithreaded Win32 program sometimes freeze when quitting

[Henry Vermaak]

On Tue, Apr 18, 2017 at 07:32:21PM +0800, Dennis wrote:
> Since this freezing behavour does not happen during debugging, I have spent
> months trying to fix it but failed.
> 
> Any suggestions are welcome.

Try using a data race detector to see if it's a deadlock.  I don't know
about Windows, but I've used the helgrind tool in valgrind to
successfully fix thread errors in a lazarus program.  If you're lucky,
the problem will manifest itself on a platform that valgrind is
available on.

Henry