Hi, I have a problem debugging a core file of a web application server with the gdb. The application server is written in objective c, running in a GNUstep environment, the binary is compiled with debugging information and is not stripped. when I try to examine the file I load it with gdb -c core-file then in gdb I issue a symbol-file /usr/local/sbin/ogo-webui-1.1 this will load the symbols of the file. then I looked with ldd /usr/local/sbin/ogo-webui-1.1 which shared libraries are loaded. (well every output of ldd differs because of the randomness :) then in gdb I did add-symbol-file ... for each shared library I saw in the ldd output, well I skipped to tell gdb the address because I did not find out where these are because of the randomness. whatever I tried, when I issue a bt in gdb, then I get lots of: #0 0x0fd6e61c in ?? () #1 0x241aba78 in ?? () #2 0x08760d2c in ?? () #3 0x087619b2 in ?? () #4 0x7d984e40 in ?? () #5 0x0007d990 in ?? () #6 0x00000000 in ?? () #7 0x8bb1f000 in ?? () #8 0x8bb1f000 in ?? () #9 0x8bb1f000 in ?? () #10 0x2fd6500c in ?? () #11 0x2fd66898 in ?? () #12 0x221ef039 in ?? () #13 0x221f70c0 in ?? () #14 0xcfbf61e8 in ?? () #15 0x0fd6f987 in ?? () is there a way to find out at which starting points the shared libraries were loaded as the application crashed? tried ldd, nm, objdump on the core file, but without luck. Do I have to disable the randomness for testing/debugging? If yes, where do I have to disable it, -fno-stack-protection, /etc/malloc.conf, syctl kern.stackgap_random, anything else? when I load a core file of the application in linux, and issue a symbol-file command, then not only the symbols of the given binary but also from all shared libraries are loaded automatically. Then issuing a bt command in gdb shows me all the information I want. Does this somehow work in the openbsd gdb? i am a bit clueless now, so what can I do to find out why the application crashed in openbsd? greets lars
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