iirc core dump format was changed to elf(5) sometime around when PIE was imported, you probably need older gdb
On 20:38 Thu 08 Oct, openbsd.misc.tmp openbsd.misc.tmp wrote: > Hi! > > I have an application that in very seldom cases causes core dumps on about a > dotzen machines that are located on customers sites. > > What I have is application.core, but I cannot read this: > > # gdb -c /home/me/application.core /home/me/application > GNU gdb 6.3 > Copyright 2004 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and you are > welcome to change it and/or distribute copies of it under certain > conditions. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show warranty" for details. > This GDB was configured as "i386-unknown-openbsd4.3"...(no debugging symbols > found) > > "/home/me/application.core " is not a core dump: File format not recognized > (gdb) quit > > # file /home/me/application.core > /home/me/application.core: data > > Anybody got an idea how this can happen? What can I do with the file I have? > > This happened more than once. Yet, all the .core files I was able to get > were unusable to me. However, when I initiate a .core file by exiting the > application intentionally with a signal, the resulting core files are OK. > > Thanks in advance! > > Regards, > T.
