Red Hat Bugzilla – Bug 3086
Qt apps in RH6.0 segfault
Last modified: 2008-05-01 11:37:50 EDT
Every Qt/KDE application I have attempted to compile in RH6.0 compiles fine, but core dumps with a segmentation fault upon exit. This effectively makes many apps useless. I've attempted compiling licq 0.61 and Kdevelop 0.3, and the segfault occurs in exactly the same place on both, in libc, presumably as part of a destructor call or some such; gdb gives (exactly the same for both): (gdb) core-file ./core Core was generated by `./conftest'. Program terminated with signal 11, Segmentation fault. Reading symbols from /usr/lib/libkdecore.so.2...done. Reading symbols from /usr/lib/libqt.so.1...done. Reading symbols from /usr/X11R6/lib/libXext.so.6...done. Reading symbols from /usr/X11R6/lib/libX11.so.6...done. Reading symbols from /usr/lib/libstdc++.so.2.9...done. Reading symbols from /lib/libm.so.6...done. Reading symbols from /lib/libc.so.6...done. Reading symbols from /usr/lib/libstdc++-libc6.1-1.so.2...done. Reading symbols from /lib/ld-linux.so.2...done. #0 0x403ba098 in _IO_cleanup () at genops.c:734 genops.c:734: No such file or directory. (gdb) where #0 0x403ba098 in _IO_cleanup () at genops.c:734 #1 0x403845e4 in exit (status=0) at exit.c:62 #2 0x4037bcb9 in __libc_start_main () at ../sysdeps/generic/libc-start.c:78 (gdb)
This has been forwarded to a developer for further review.
Do you have a clean 6.0 install? I can't duplicate this on my machine, and as a KDE developer, trust me, I do a lot of Qt/KDE programming. ------- Additional Comments From 06/09/99 00:26 ------- I found the problem! It was an issue with my setup, however others I had talked to on the licq mailing list had experienced the same thing and no one really had an answer, so I don't know if you want to post this in a knowledge base or FAQ or something somewhere so others who might have the same problem will be able to fix it easily. RedHat 5.2 shipped with gcc 2.7.2.3 and egcs 1.0.3, which coexisted peacefully on the same machine. This version of egcs was broken in some places, and unusable for what I needed it for, so I installed the egcs team's 1.1b release RPMs. They must have segmented their RPMs differently than RedHat packages egcs for their releases. Because of this, libstdc++ and libstdc++-devel, which I downloaded with the 1.1b release, did not get clobbered/erased/upgraded when I installed 6.0. Thus, egcs 1.1.2 was using the 1.1b versions of libstdc++-devel; and things magically worked until IO was cleaned up when the program finished (funny that). The fix is to uninstall the old egcs libs and the current version of egcs, and reinstall the RH 6.0 versions of egcs, including the separate cpp RPM. To reproduce, have a clean 5.2 box, install the 1.1b egcs RPMs, and then upgrade to 6.0...the 6.0 installer won't catch this (not that it should necessarily), and you'll be left with a tweaked egcs release. Thanks for your help.
attributed to bad interaction between the user's interim egcs RPM and the 6.0 upgrade.