Re: Abort backtrace when consecutive zero PCs?

Andrew Cagney
2004-09-15T22:46:15Z

> On Wed, Sep 15, 2004 at 01:34:21PM -0400, Andrew Cagney wrote:
>
>>> Hello,
>>>
>>> One backtrace infinite loop case I've noticed (especially on ia64) is
>>> where successive frames all have a zero PC.
>>>
>>> While we definitly need to allow a backtrace through a single zero PC
>>> (for a NULL pointer call - signull.exp) should we make GDB abort when
>>> two or more consecutive frames have a zero PC?
>>>
>>> (mumble something about a runtime option)
>>>
>>> thoughts?
>
>
> I still think that you

me or we? Do you have a pointer to the thread?

> want to reject zero PC followed by a normal
> (non-signal/dummy) frame, for exactly this reason...

That sounds like a NULL pointer function call, which is what signull.exp
is all about.

Andrew