Re: [PATCH 4/5] powerpc64-aix ptrace64 when defined.

Joel Brobecker
2013-08-22T23:32:39Z

> I built gdb-7.6 with the ptrace64 patch (without --enable-64-bit-bfd)
> and it seems to work correctly on cc1plus. So at least the current
> patch does not harm debugging.

Actually, I just found that it breaks thread support on 32bit AIX,
at least. A simpler way to show the problem is:

(gdb) x /x &__n_pthreads
0xf06a8258 <__n_pthreads>: Cannot access memory at address 0xf06a8258

Prior to the patch, we have:

(gdb) x /x &__n_pthreads
0xf06a8258 <__n_pthreads>: 0x00000003

The error returned by ptrace64 is EIO (5), which means it thinks
the address is wrong (or else the request ID is invalid, but I doubt
that). I'm a bit rushed, as usual, but I still have a little extra
time today to dig a little further.

--
Joel