Administrace komentářů

strace -vf /home/rony/app/juke 
execve("/home/rony/app/juke", ["/home/rony/app/juke"], ["SHELL=/bin/bash", "SESSION_MANAGER=local/ares:@/tmp"..., "WINDOWID=50331655", "QT_ACCESSIBILITY=1", "COLORTERM=truecolor", "XDG_CONFIG_DIRS=/etc/xdg/xdg-pla"..., "XDG_SESSION_PATH=/org/freedeskto"..., "LANGUAGE=sk:en_US", "MANDATORY_PATH=/usr/share/gconf/"..., "LC_ADDRESS=sk_SK.UTF-8", "LC_NAME=sk_SK.UTF-8", "SSH_AUTH_SOCK=/tmp/ssh-RLdoOyVyX"..., "SHELL_SESSION_ID=c22f7b898e7b451"..., "DESKTOP_SESSION=plasma", "LC_MONETARY=sk_SK.UTF-8", "SSH_AGENT_PID=7260", "GTK_RC_FILES=/etc/gtk/gtkrc:/hom"..., "XCURSOR_SIZE=24", "XDG_SEAT=seat0", "PWD=/home/rony/app", "XDG_SESSION_DESKTOP=KDE", "LOGNAME=rony", "XDG_SESSION_TYPE=x11", "GPG_AGENT_INFO=/run/user/1000/gn"..., "XAUTHORITY=/home/rony/.Xauthorit"..., "GTK2_RC_FILES=/etc/gtk-2.0/gtkrc"..., "HOME=/home/rony", "SSH_ASKPASS=/usr/bin/ksshaskpass", "LC_PAPER=sk_SK.UTF-8", "LANG=sk_SK.UTF-8", "LS_COLORS=rs=0:di=01;34:ln=01;36"..., "XDG_CURRENT_DESKTOP=KDE", "KONSOLE_DBUS_SERVICE=:1.147", "KONSOLE_DBUS_SESSION=/Sessions/2", "PROFILEHOME=", "XDG_SEAT_PATH=/org/freedesktop/D"..., "KONSOLE_VERSION=200802", "KDE_SESSION_UID=1000", "LESSCLOSE=/usr/bin/lesspipe %s %"..., "XDG_SESSION_CLASS=user", "TERM=xterm-256color", "LC_IDENTIFICATION=sk_SK.UTF-8", "DEFAULTS_PATH=/usr/share/gconf/p"..., "LESSOPEN=| /usr/bin/lesspipe %s", "LIBVIRT_DEFAULT_URI=qemu:///syst"..., "USER=rony", "COLORFGBG=15;0", "KDE_SESSION_VERSION=5", "PAM_KWALLET5_LOGIN=/run/user/100"..., "DISPLAY=:0", "SHLVL=1", "LC_TELEPHONE=sk_SK.UTF-8", "LC_MEASUREMENT=sk_SK.UTF-8", "XDG_VTNR=1", "XDG_SESSION_ID=10", "XDG_RUNTIME_DIR=/run/user/1000", "LC_TIME=sk_SK.UTF-8", "QT_AUTO_SCREEN_SCALE_FACTOR=0", "XCURSOR_THEME=breeze_cursors", "XDG_DATA_DIRS=/usr/share/plasma:"..., "KDE_FULL_SESSION=true", "PATH=/usr/local/sbin:/usr/local/"..., "DBUS_SESSION_BUS_ADDRESS=unix:pa"..., "KDE_APPLICATIONS_AS_SCOPE=1", "LC_NUMERIC=sk_SK.UTF-8", "KONSOLE_DBUS_WINDOW=/Windows/1", "OLDPWD=/home/rony/lazarus-projek"..., "_=/usr/bin/strace"]) = -1 EPERM (Operácia nie je povolená)
+++ killed by SIGSEGV +++
Chyba segmentácie

Toto bolo ako user. Ulimit je unlimited. Core nevygenerované, takže core do gdb neviem dať.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./juke...
(gdb) run
Starting program: /home/rony/app/juke 
During startup program terminated with signal SIGSEGV, Segmentation fault.
(gdb) bt
No stack.
(gdb) 

alebo s catch throw

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./juke...
(gdb) catch throw
Catchpoint 1 (throw)
(gdb) run
Starting program: /home/rony/app/juke 
During startup program terminated with signal SIGSEGV, Segmentation fault.
(gdb) bt
No stack.
(gdb) 

GDB som použil tiež ako user, ako root sa to rozbehne aj v debuggeri. Aj aplikácia ako root beží. Skúsil som "Hello word" skompilovaný cross kompilátorom u kolegu - ako root ide, ako user nie. Rovnako ako tá appka. Skompiloval som to na linuxe ide OK pod oboma kontami. Už sme našli, že programátor používal nižšiu verziu freepascalu a cross kompilátora. Takže ide appku skompilovať s novým. Bez ohľadu na to, že pôvodná kompilácia bola starším kompilátorom, je otázka prečo to ako root ide a ako user nie. Problém sme vyriešili, ale nie sme veľmi múdrejší. Ako sa dá k tomuto dôjsť inak ako metódou pokus - omyl. Z vyskúšaného, resp. z otestovaného nevieme dospieť k tomu, že problém je nižšiu verziou pascalu prípadne jeho cross kompilátorom resp. nejakou chybou v nich. Ďakujem za pomoc.