gnu.gcj.runtime.StackTrace.findCallerClass() (was Re: Patch: Remove exception catching from normal path in Arrays.equals.)

[Andrew Haley]

Mohan Embar writes:
 > >>If HAVE_BACKTRACE is not set, do not scan the stack but return null.
 > >>
 > >>If HAVE_BACKTRACE is set, we believe that backtrace() works.  So,
 > >>throw an exception if we don't find a caller.
 > >>
 > >>I await the firestorm...
 > >
 > >Um, I thought about this too but, you know the obviously glaring question
 > >so can you pre-emptively answer it?

Sorry?

 > P.S. If we agree that exception throwing is the right thing to do on
 > platforms which support it, I'd much rather do something like deliberately
 > dereference a null pointer in the non-HAVE_BACKTRACE case in order
 > to trigger a clean failure and somewhat simulate the same calling
 > semantics.

No, that's wrong because we want an Error and not an Exception.

Andrew.