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List:       gdb
Subject:    Re: I'm a beginner and need help about "Segmentation fault" error.
From:       Anton Krug via Gdb <gdb () sourceware ! org>
Date:       2020-11-09 11:55:10
Message-ID: MWHPR1101MB2270190997E61D3902FB0DA982EA0 () MWHPR1101MB2270 ! namprd11 ! prod ! outlook ! com
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And when the -g is enabled, do not strip the symbols from the binary. So remove '-s' if you have in the compilation process, and remove 'strip' commands which might be triggered on the compiled object files after they were compiled.
________________________________
From: Gdb <gdb-bounces@sourceware.org> on behalf of Simon Marchi <simark@simark.ca>
Sent: 07 November 2020 01:16
To: Jason Long <hack3rcon@yahoo.com>; gdb@sourceware.org <gdb@sourceware.org>
Subject: Re: I'm a beginner and need help about "Segmentation fault" error.

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On 2020-11-06 1:10 p.m., Jason Long via Gdb wrote:
> Thank you.
> I did what you said:
>
> (gdb) run
> Starting program: /usr/local/bin/ramme
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
>
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x0000000000e6e0c0 in ?? ()
> (gdb) backtrace
> #0  0x0000000000e6e0c0 in ?? ()
> #1  0x00007ffff7d85462 in node::http2::Http2Session::Callbacks::Callbacks(bool)
>     () from /opt/Ramme/libnode.so
> #2  0x00007ffff7d85525 in ?? () from /opt/Ramme/libnode.so
> #3  0x00007ffff7fe437a in call_init (l=<optimized out>, argc=argc@entry=1,
>     argv=argv@entry=0x7fffffffe248, env=env@entry=0x7fffffffe258)
>     at dl-init.c:72
> #4  0x00007ffff7fe4476 in call_init (env=0x7fffffffe258, argv=0x7fffffffe248,
>     argc=1, l=<optimized out>) at dl-init.c:30
> #5  _dl_init (main_map=0x7ffff7ffe190, argc=1, argv=0x7fffffffe248,
>     env=0x7fffffffe258) at dl-init.c:119
> #6  0x00007ffff7fd60ca in _dl_start_user () from /lib64/ld-linux-x86-64.so.2
> #7  0x0000000000000001 in ?? ()
> #8  0x00007fffffffe52b in ?? ()
> #9  0x0000000000000000 in ?? ()
>
>
> What is the next step?

The next step would be to compile your program with debug info (-g3) and
without optimization (-O0).

I also suggest you search and read for any GDB tutorial out there, it
will walk you though these steps.

Simon
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