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Re: backtrace shows ?? instead of function names in gdb

From: "Saurabh Thukral" <saurabhth at gmail dot com>
To: "Andreas Schwab" <schwab at suse dot de>
Cc: gdb at sourceware dot org
Date: Wed, 13 Jun 2007 15:05:47 +0530
Subject: Re: backtrace shows ?? instead of function names in gdb
References: <4a4b2c810706130202q35296aadxe139a0e8a305c7e6@mail.gmail.com> <jelkeo9pi8.fsf@sykes.suse.de>


That looks like an indirect call through a NULL function pointer.  Never
a valid function, thus it never has a name.

Andreas.

--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

Hi Andreas,

Thanks for the prompt response.
I will investigate this matter by doing code review.

Whether this is the only reason that such a peculiar backtrace is
produced ? If you refer to the link given in my original post, the
answer posted states several reasons.

Saurabh

References:
- backtrace shows ?? instead of function names in gdb
  - From: Saurabh Thukral
- Re: backtrace shows ?? instead of function names in gdb
  - From: Andreas Schwab

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