Red Hat Bugzilla – Bug 147777
libsafe causes programs using libc-5.4.46-4 to segfault
Last modified: 2007-11-30 17:11:00 EST
From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; X11; Linux i686) Opera 7.54 [en] Description of problem: This depends on the mix of libraries. Using, in particular, libc-5.4.46-4.i686.rpm and ld.so-1.9.9-11.i686. rpm to run /opt/WordPerfect8/wpbin/xwp will cause xwp to segfault. Removing libsafe allows xwp to run normally. $ ldd /opt/WordPerfect8/wpbin/xwp libXt.so.6 => /usr/lib/libc5/libXt.so.6 (0xb7f92000) libX11.so.6 => /usr/lib/libc5/libX11.so.6 (0xb7f00000) libXpm.so.4 => /usr/lib/libc5/libXpm.so.4 (0xb7ef2000) libm.so.5 => /usr/lib/libc5/libm.so.5 (0xb7eea000) libc.so.5 => /usr/lib/libc5/libc.so.5 (0xb7e2a000) libSM.so.6 => /usr/lib/libc5/libSM.so.6 (0xb7e22000) libICE.so.6 => /usr/lib/libc5/libICE.so.6 (0xb7e0e000) If instead, using libc-5.3.12-31.i386.rpm and ld.so-1.9.9-11.i686. rpm, running xwp gives $ /opt/WordPerfect8/wpbin/xwp /opt/WordPerfect8/wpbin/xwp: can't resolve symbol '_rtld_global' /opt/WordPerfect8/wpbin/xwp: can't resolve symbol '_rtld_global_ro' Those symbols seem to be from /lib/libdl.so.2, called by /lib/ libsafe.so.2 right after /usr/i386-glibc21-linux/lib/ld-linux.so.2 is accessed. I see the exact same behavior, using each library, with an old libc color-ls. Version-Release number of selected component (if applicable): libsafe-2.0-16.fdr.1.rh80 How reproducible: Always Steps to Reproduce: 1. 2. 3. Additional info:
The messages above seem to indicate that you are using a version of libsafe compiled for a different glibc than what you are using. I think this is a design limitation of libsafe. libsafe would need to be compiled against the old libc-5 library to work for those, which might make it not work for anything newer. I don't really think this is supportable in a generic way.
Yes, the base libc is glibc from glibc-2.3.4-2.fc3 and libc-5 is a compatability library. I looked at the libsafe Avaya Labs Research website. They specifically say: Notes * libc5 linked programs are not supported. So I guess that is that. Still, if someone really wanted to, there might be ways to work with LD_PRELOAD or /etc/ld.so.preload, or possibly LD_LIBRARY_PATH, so that libsafe was not invoked for libc-5 programs. A wrapper script could clear LD_PRELOAD before running a libc-5 program, for instance.
FC3 and FC4 have now been EOL'd. Please check the ticket against a current Fedora release, and either adjust the release number, or close it if appropriate. Thanks. Your friendly BZ janitor :-)
Closing this since it doesn't apply to current releases