irst of all, what you have is a fully compiled program, not an object file, so drop the .o
extension. Now, pay attention to what the error message says, it tells you exactly how to fix your problem: “No symbol table is loaded. Use the “file” command.”
(gdb) exec-file test (gdb) b 2 No symbol table is loaded. Use the "file" command. (gdb) file test Reading symbols from /home/user/test/test...done. (gdb) b 2 Breakpoint 1 at 0x80483ea: file test.c, line 2. (gdb)
Or just pass the program on the command line.
$ gdb test GNU gdb (GDB) 7.4 Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> [...] Reading symbols from /home/user/test/test...done. (gdb) b 2 Breakpoint 1 at 0x80483ea: file test.c, line 2. (gdb)