Backtrace is broken without -g

[Per Bothner]

Andrew Haley wrote:
> One thing: this may have an impact on the reflection data in a
> compiled file.  What are our rules about maintaining backwards binary
> compatibility?  Do we need to make libgcj compatible with java
> binaries compiled with an earlier compiler?

In my opinion:  Not yet.  I don't think we're ready for a stable ABI.
For example, I'd like to a more more compact and shared-library-friendly
meta-data format (i.e. something that needs many fewer relocations).

Another project that will break ocmpatibility:  I'm looking into
getting rid of the Java exception handling personality routine, just
using the C++ personality routine instead, and adding C++ type_info
objects.
-- 
	--Per Bothner
per@bothner.com   http://www.bothner.com/per/