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Re: [RFC] Move the frame zero PC check earlier

On Thu, May 11, 2006 at 11:20:03PM -0700, Jim Blandy wrote:
> I think so.  Using the backtrace above as an example, I understood why
> we need to know frame #1's type, but I didn't see the point in
> checking frame #2's type.
> 
> But I think I do now.  If CALL_DUMMY_LOCATION is AT_ENTRY_POINT, and
> the entry point is at address zero, then the test as written above
> would truncate backtraces at dummy frames.

Yeah, that's the only case I could think of.  It's a shame to do extra
work for it everywhere - but probably safer.  I can reorder the test to
only check the frame type if the PC is zero, though.

-- 
Daniel Jacobowitz
CodeSourcery
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