Re: [fluxbox-users] QT applicacion dies on plain fluxbox, but not on fluxbox on top of LXDE
Nable <[email protected]> Thu, 12 Nov 2015 01:41:10 +0300
| Newsgroups | gmane.comp.window-managers.fluxbox.user |
|---|---|
| Message-ID | <CALxOYEY1DHPTvaokDZeam9xzAY5CcgtatabEdXFpMYPWe+tVDA@mail.gmail.com> |
Ok, let the fun go. What version of hpmyroom are you using? Does this one look familiar? $ wc -c hpmyroom_deb 46537605 hpmyroom_deb $ md5sum hpmyroom_deb 4f2e520894f453a533f81d1163ddfa85 hpmyroom_deb It was extracted from hpmyroom_v10.4.0.0168_i386.deb, thus the "_deb" suffix. It's a 32-bit version without even -fomit-frame-pointer, so debugging seems to be easy: 832e2c6: 8d 83 e8 ad e7 fe lea eax,[ebx-0x1185218] 832e2cc: 89 11 mov DWORD PTR [ecx],edx 832e2ce: c7 41 28 00 00 00 00 mov DWORD PTR [ecx+0x28],0x0 832e2d5: c7 41 2c 00 00 00 00 mov DWORD PTR [ecx+0x2c],0x0 832e2dc: 89 04 24 mov DWORD PTR [esp],eax 832e2df: e8 3c 87 d2 ff call 8056a20 <getenv@plt> 832e2e4: b9 03 00 00 00 mov ecx,0x3 832e2e9: 89 c6 mov esi,eax 832e2eb: f3 a6 repz cmpsb ; <<< here it fails in your case As you can see, this application tries to get the value of some environment variable and then compare it with some string (i'm a bit in a hurry now to find the exact values by myself). But if this environment variable is missing, getenv returns NULL and application fails in a bad way. Now you can find exact values of interesting strings: $ gdb hpmyroom tb *0x832e2df run print (char*)$eax print (char*)$edi First print gives you the variable name, second one shows some string. What are these strings? ------------------------------------------------------------------------------