To see if Licq would build without warnings with gcc 4.5 I tried to build Licq trunk with the latest gcc-snapshot in Debian today. Three warnings were quickly fixed but a bigger problem was that the unit test hung; something which doesn’t happen with earlier gcc.
After some digging it turned out to be a problem with locking. A mutex was never unlocked when returning in the exception handler. This was very strange as the unlocking should be done by the MutexLocker destructor.
I was able to reproduce the problem with a simple test program so I concluded that it was indeed a compiler bug and reported it: Destructor not called when returning in exception handler.
Not every day you get to find a compiler bug…
