File: implicit-none.f90

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! Ensure argument -fimplicit-none works as expected.

!--------------------------
! FLANG DRIVER (flang)
!--------------------------
! RUN: %flang -fsyntax-only %s  2>&1 | FileCheck %s --allow-empty --check-prefix=DEFAULT
! RUN: %flang -fsyntax-only -fimplicit-none -fno-implicit-none %s  2>&1 | FileCheck %s --allow-empty --check-prefix=DEFAULT
! RUN: not %flang -fsyntax-only -fimplicit-none %s  2>&1 | FileCheck %s --check-prefix=WITH_IMPL_NONE

!-----------------------------------------
! FRONTEND FLANG DRIVER (flang_fc1)
!-----------------------------------------
! RUN: %flang_fc1 -fsyntax-only %s  2>&1 | FileCheck %s --allow-empty --check-prefix=DEFAULT
! RUN: %flang_fc1 -fsyntax-only -fimplicit-none -fno-implicit-none %s  2>&1 | FileCheck %s --allow-empty --check-prefix=DEFAULT
! RUN: not %flang_fc1 -fsyntax-only -fimplicit-none %s  2>&1 | FileCheck %s --check-prefix=WITH_IMPL_NONE

! DEFAULT-NOT:error

! WITH_IMPL_NONE:No explicit type declared for 'a'
! WITH_IMPL_NONE:No explicit type declared for 'b'

function a()
  a = b
end