(gdb) bt
#0  0x00000200002d0020 in ?? ()
warning: Hit heuristic-fence-post without finding enclosing function for address 0x200002d0020
This warning occurs if you are debugging a function without any symbols
(for example, in a stripped executable).  In that case, you may wish to
increase the size of the search with the `set heuristic-fence-post' command.

Otherwise, you told GDB there was a function where there isn't one, or
(more likely) you have encountered a bug in GDB.
#1  0x000002000004b0a8 in jit_apply (signature=0x1200120b0,
    func=0x200002d0020, args=0x11fe4b300, num_fixed_args=3,
    return_value=0x11fe4b320) at jit-apply.c:422
#2  0x00000200000575f0 in jit_function_apply_vararg (func=0x120012130,
    signature=0x1200120b0, args=0x11fe4b300, return_area=0x11fe4b320)
    at jit-function.c:1275
#3  0x0000020000057694 in jit_function_apply (func=0x11fe4af90, args=0x0,
    return_area=0x0) at jit-function.c:1220
#4  0x0000000120000d28 in main ()