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! { dg-do compile }

module binding_label_tests

  use, intrinsic :: iso_c_binding

  implicit none

  contains

  subroutine c_sub() BIND(c, name = "C_Sub")

    print *, 'hello from c_sub'

  end subroutine c_sub

  integer(c_int) function c_func() bind(C, name="__C_funC")

    print *, 'hello from c_func'

    c_func = 1

  end function c_func

  real(c_float) function f90_func()

    print *, 'hello from f90_func'

    f90_func = 1.0

  end function f90_func

  real(c_float) function c_real_func() bind(c)

    print *, 'hello from c_real_func'

    c_real_func = 1.5

  end function c_real_func

  integer function f90_func_0() result ( f90_func_0_result )

    print *, 'hello from f90_func_0'

    f90_func_0_result = 0

  end function f90_func_0

  integer(c_int) function f90_func_1() result ( f90_func_1_result ) bind(c, name="__F90_Func_1__")

    print *, 'hello from f90_func_1'

    f90_func_1_result = 1

  end function f90_func_1

  integer(c_int) function f90_func_3() result ( f90_func_3_result ) bind(c)

    print *, 'hello from f90_func_3'

    f90_func_3_result = 3

  end function f90_func_3

  integer(c_int) function F90_func_2() bind(c) result ( f90_func_2_result )

    print *, 'hello from f90_func_2'

    f90_func_2_result = 2

  end function f90_func_2

  integer(c_int) function F90_func_4() bind(c, name="F90_func_4") result ( f90_func_4_result )

    print *, 'hello from f90_func_4'

    f90_func_4_result = 4

  end function f90_func_4

  integer(c_int) function F90_func_5() bind(c, name="F90_func_5") result ( f90_func_5_result )

    print *, 'hello from f90_func_5'

    f90_func_5_result = 5

  end function f90_func_5

  subroutine c_sub_2() bind(c, name='c_sub_2')

    print *, 'hello from c_sub_2'

  end subroutine c_sub_2

  subroutine c_sub_3() BIND(c, name = "  C_Sub_3  ")

    print *, 'hello from c_sub_3'

  end subroutine c_sub_3

  subroutine c_sub_5() BIND(c, name = "C_Sub_5        ")

    print *, 'hello from c_sub_5'

  end subroutine c_sub_5

  ! nothing between the quotes except spaces, so name="".

  ! the name will get set to the regularly mangled version of the name.

  ! perhaps it should be marked with some characters that are invalid for

  ! C names so C can not call it?

  subroutine sub4() BIND(c, name = "        ")

  end subroutine sub4

end module binding_label_tests

! { dg-final { cleanup-modules "binding_label_tests" } }