[Bug fortran/82143] add a -fdefault-real-16 flag

[janus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82143

--- Comment #25 from janus at gcc dot gnu.org ---
Author: janus
Date: Tue Sep 26 20:28:00 2017
New Revision: 253214

URL: https://gcc.gnu.org/viewcvs?rev=253214&root=gcc&view=rev
Log:
2017-09-26  Janus Weil  <ja...@gcc.gnu.org>

        PR fortran/82143
        PR fortran/82324
        * doc/sourcebuild.texi: Document fortran_real_10 and fortran_real_16.

2017-09-26  Janus Weil  <ja...@gcc.gnu.org>

        PR fortran/82143
        PR fortran/82324
        * lib/target-supports.exp (check_effective_target_fortran_real_10):
New.
        * gfortran.dg/promotion_3.f90: Only run if real(16) is available.
        * gfortran.dg/promotion_4.f90: Only run if real(10) is available.
        Don't assume that DOUBLE PRECISION has kind=16.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/doc/sourcebuild.texi
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gfortran.dg/promotion_3.f90
    trunk/gcc/testsuite/gfortran.dg/promotion_4.f90
    trunk/gcc/testsuite/lib/target-supports.exp