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Editorial Team
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Asked: 2026-06-18T10:15:34+00:00

I’m testing a library from a third party and it crashes. When I wanted

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I’m testing a library from a third party and it crashes. When I wanted to see the reason of the crash my gdb told me that there were no debugging symbols available

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb53ffb70 (LWP 3722)]
0x00172a89 in tsip_transac_send () from /usr/local/lib/libtinySIP.so.0

I issued bt full on the gdb console and I get a series of lines like below

#0  0x00172a89 in tsip_transac_send () from /usr/local/lib/libtinySIP.so.0
No symbol table info available

I recompiled the library after checking the CFLAGS in the Makefile. The values were fine all the time but I recompiled it anyway 

CFLAGS = -g -O2

I ran the test again with the same luck, no debug symbols for the shared library.

What am I missing here?

I’m using Centos 6.0, and I installed the library in Opensuse before but I didn’t have this problem. It probably has something to do with my Centos installation.

In case anyone cares, I’m testing Doubango’s library for webrtc2sip.

EDIT:
Debug symbols are being loaded properly

(gdb) info sharedlibrary
From        To          Syms Read   Shared Object Library
0x002fb830  0x0031339f  Yes (*)     /lib/ld-linux.so.2
0x00115040  0x00120028  Yes         /usr/local/lib/libtinySAK.so.0
0x00133f30  0x0018b378  Yes         /usr/local/lib/libtinySIP.so.0
0x001d8ac0  0x00201b98  Yes         /usr/local/lib/libtinyNET.so.0
0x00215dd0  0x0023f638  Yes         /usr/local/lib/libtinyDAV.so.0
0x0024eec0  0x00261728  Yes         /usr/local/lib/libtinyMEDIA.so.0
0x0026bb00  0x002774d8  Yes         /usr/local/lib/libtinyHTTP.so.0
0x002ae340  0x002b0358  Yes         /usr/local/lib/libtinyXCAP.so.0
0x002b3990  0x002b8d18  Yes         /usr/local/lib/libtinySMS.so.0
0x002be630  0x002c9388  Yes         /usr/local/lib/libtinyMSRP.so.0
0x002de240  0x002e8e18  Yes         /usr/local/lib/libtinySDP.so.0
0x00323060  0x00345778  Yes         /usr/local/lib/libtinyRTP.so.0
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1 Answer

  1. Editorial Team

    Well, it looks like it was a bug in gdb.

    Centos 6 has the version 7.2-56.el6 precompiled in its repository. I updated (by compiling the sources) to the latest version of gdb and now it is working.

    Thanks to all for your help.

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