c++filt causing flashing console windows

[Andrew Haley]

Øyvind Harboe writes:
 > In case someone else wonders about this...
 > 
 > To remove the flashing consloe windows when running with -mwindows,
 > add the following two arguments to the GCJ command line:
 > 
 > -Dgnu.gcj.runtime.NameFinder.demangle=false
 > -Dgnu.gcj.runtime.NameFinder.use_addr2line=false

Surely the bug is not here.  exec'ing c++filt and addr2line should not
cause anything to flash, and that is the bug.

Andrew.