[Bug fortran/96033] New: error: The Fortran compiler gfortran will not compile files that call the same routine with arguments of different types.

[skorzennik at cfa dot harvard.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96033

            Bug ID: 96033
           Summary: error: The Fortran compiler gfortran will not compile
                    files that call the same routine with arguments of
                    different types.
           Product: gcc
           Version: 10.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: skorzennik at cfa dot harvard.edu
  Target Milestone: ---

Failed to configure to build mvapich2-2.3.[14] (both versions) using GCC
10.1.0. I have no problem building mvapich2 w/ GCC pre-10.x (9.3, 9.2, etc...)

Boils down to trying to compile
conftest.f
::::::::::::::
      program main
      integer a
      real b
      character c
      call foo1(a)
      call foo1(b)
      call foo1(c)
      end

This test code compiles fine w/ 9.3.0, or older GCC I have installed and tried
(9.2.0, 7.3.0 or 4.8.5).