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From: Varun Kumar Erigila <varun.erigila@blackfigtech.com>
To: "gdb@sourceware.org" <gdb@sourceware.org>
Subject: working of backtrace command in GDB
Date: Wed, 25 Jan 2023 04:49:24 +0000	[thread overview]
Message-ID: <BMXPR01MB1029CA3D804A402619BEFFB68DCE9@BMXPR01MB1029.INDPRD01.PROD.OUTLOOK.COM> (raw)

[-- Attachment #1: Type: text/plain, Size: 622 bytes --]

Hello Everyone,
              I'm trying to figure out whether gdb makes use of CFI information for "backtrace command."
              In case of watchpoints, gdb tries to figure out whether the frame containing the variable on which watchpoint is set is still present by going through all the frames in stack. (it calls execute_cfa_program function to figure this out).
              But in the case of the backtrace command it does not call the execute_cfa_program to unwind all the frames.
              Is there another mechanism gdb uses to unwind the stack frames apart from CFI information.

Regards,
Varun

             reply	other threads:[~2023-01-25  4:49 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-25  4:49 Varun Kumar Erigila [this message]
2023-01-25 16:53 ` Simon Marchi

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