Adrian Aichner wrote:
This build with UNION_TYPE does NOT crash immediately on
C-c p (toggle-profiling)
It crashed on the third time.
I'm trying to look into this a bit.
Adrian
  
 
Could you keep posting backtraces?  your last backtrace indicated that 
something very strange was going on, possibly a compiler bug.  perhaps 
further backtraces will illuminate.
ben