Recommended GCC version?

[Martin Buchholz]

When I worked on XEmacs, I acquired many systems
and compilers and used them to test XEmacs.
Quite aside from creating new ports that are actually useful
to users, each successful port is a Quality Improvement
exercise.  Each new port typically finds new bugs.
I recall one particularly insidious bug found only using
the 64-bit Irix compiler.

So I'm a big fan of at least porting to many compilers.
But the culture of JDK development is not quite right
to reap maximal Quality benefits from this activity.

Martin