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