[PING] Enhance array types debug info. for Ada

[Pierre-Marie de Rodat]

Ping for https://gcc.gnu.org/ml/gcc-patches/2014-12/msg00058.html.

On 12/01/2014 05:40 PM, Pierre-Marie de Rodat wrote:
> While I agree this might trigger compatibility issues with old
> debuggers, I don't know what to do assuming this change is not
> acceptable: should we add a kludge in add_scalar_info in order to force
> unsignedness when generating debugging information for Fortran?

Here is a data point: I tried to debug gfortran.dg/array_function_2.f90 
build with my patches compiler for x86_64-linux with a GDB from an old 
GNAT Pro release (5.03a1, from 2005):

(gdb) b array_function_2.f90:24
(gdb) r
(gdb) ptype q_in
type = real*8 (0:-1,-6:-1)

With a recent GDB, I have instead:
(gdb) ptype q_in
type = real(kind=8) (0:*,-6:*)

Given that the only thing that my patches changed in the debug 
information for this example is the encoding of the arrays' lower 
bounds, everything looks fine, here.

-- 
Pierre-Marie de Rodat