[PATCH/RFC] gag some compiler warnings

[Mark Kettenis]

Elena Zannoni <ezannoni@redhat.com> writes:

> I am seeing these on a 64 bit system, when building gdb in 32-bit mode:
> 
> /home/cygnus/ezannoni/gdb-6/src/gdb/infptrace.c: In function `child_xfer_memory':
> /home/cygnus/ezannoni/gdb-6/src/gdb/infptrace.c:570: warning: cast to pointer from integer of different size
> 
> The problem is that we pass a CORE_ADDR (which is 8 bytes long) to
> ptrace and we cast it to PTRACE_ARG3_TYPE (which is 4 bytes long).
> 
> Is this ok? Not too pretty, I know.
>    * infptrace.c (child_xfer_memory): Cast ptrace argument to long,
>      for cases in which CORE_ADDR size and pointer size don't agree.

Hmm.  I don't think this is OK.  This could easily hide genuine
problems.  What system is this?  Or perhaps a better question: what is
the prototype of ptrace() in 32-bit mode on this system, and what is
your definition of PTRACE_ARG3_TYPE on this system?

Mark