[Bug fortran/91497] New: -Wconversion warns when doing explicit type conversion

[manfred99 at gmx dot ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91497

            Bug ID: 91497
           Summary: -Wconversion warns when doing explicit type conversion
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: manfred99 at gmx dot ch
  Target Milestone: ---

real b
      double precision a
      PARAMETER(a=3.1415927d0)

      b=REAL(a)
      b=REAL(a, kind=4)
      end

gives
a.f:5:13:

    5 |       b=REAL(a)
      |             1
Warning: Change of value in conversion from 'REAL(8)' to 'REAL(4)' at (1)
[-Wconversion]
a.f:6:13:

    6 |       b=REAL(a, kind=4)
      |             1
Warning: Change of value in conversion from 'REAL(8)' to 'REAL(4)' at (1)
[-Wconversion]


for current trunk (no new regression though).


gfortran should not warn about explicit type conversions with REAL(), INT()
etc.
Otherwise there is no possibility to silence this warning.