[Bug libfortran/92027] New: [10 regression] gfortran.dg/ISO_Fortran_binding_10.f90 FAILs

[ro at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92027

            Bug ID: 92027
           Summary: [10 regression] gfortran.dg/ISO_Fortran_binding_10.f90
                    FAILs
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libfortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ro at gcc dot gnu.org
  Target Milestone: ---
            Target: sparc-sun-solaris2.11, m68k-*-*, powerpc*-*-*

Between 20191004 (r276564) and 20191005 (r276629), a fortran testcase
regressed:

+FAIL: gfortran.dg/ISO_Fortran_binding_10.f90   -O2  execution test
+FAIL: gfortran.dg/ISO_Fortran_binding_10.f90   -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
+FAIL: gfortran.dg/ISO_Fortran_binding_10.f90   -O3 -g  execution test
+FAIL: gfortran.dg/ISO_Fortran_binding_10.f90   -Os  execution test

I'm seeing it on Solaris/SPARC (64-bit only), but there are also reports on
m68k and powerpc*.

If I use the unmodified executable with libgfortran.so from GCC 9, the test
PASSes.

The failure (at -O2) is as follows:

 FAIL 5:   11.0000000       13.0000000       15.0000000    
STOP 4