Re: [Playerstage-developers] [ playerstage-Bugs-2014733 ] Shared libraries causing segfaults under QNX

[gbiggs <gb...@ki...>]

If the symbols are there but gdb is not finding them, could it be some 
kind of incompatibility between gcc and gdb?

Geoff

Paul Osmialowski wrote:
> gcc 2.95, and it looks that it builds symbols (`nm player` gives a list, 
> see: http://vlab.pjwstk.edu.pl/~vlabdemo/player.nm.txt (also with 
> CMAKE_BUILD_TYPE set to Debug is that gdb does not show "(no debugging 
> symbols found)..." message). Indeed at 0x8048f08 there is _init. Since 
> 'continue' didn't stopped at breakponint, segmentation fault must have 
> occured before that. And since 0xb032bd7b is 8 hex positions length while 
> 0x8048f08 (_init) is 7 hex positions, it is happening far from this code.
> (I'm not sure if these addresses can be compared that simple). It must be 
> something with shared library loader I suspect. Shared objects are found 
> according to a path given in LD_LIBRARY_PATH variable:
> 
> bash-2.05a# echo $LD_LIBRARY_PATH
> :/x86/lib:/x86/opt/X11R6/lib:/usr/eclipse/ive/bin
> bash-2.05a# pwd
> /root/psg22/bin
> bash-2.05a# ./player
> Could not find library libplayerdrivers.so.2.2
> bash-2.05a# psg22
> bash-2.05a# echo $LD_LIBRARY_PATH
> :/x86/lib:/x86/opt/X11R6/lib:/usr/eclipse/ive/bin:/root/psg22/lib
> bash-2.05a# ./player
> segmentation violation (core dumped)
> 
> Paul