gcc/testsuite/gfortran.dg/warn_implicit_procedure_1.f90

   1 ! { dg-do compile }
   2 ! { dg-options "-Wimplicit-procedure" }
   3
   4 ! PR fortran/22552
   5 ! Check for correct -Wimplicit-procedure warnings.
   6
   7 MODULE m
   8
   9 CONTAINS
  10
  11   SUBROUTINE my_sub ()
  12   END SUBROUTINE my_sub
  13
  14   INTEGER FUNCTION my_func ()
  15     my_func = 42
  16   END FUNCTION my_func
  17
  18 END MODULE m
  19
  20 SUBROUTINE test (proc)
  21   IMPLICIT NONE
  22   CALL proc () ! { dg-bogus "is not explicitly declared" }
  23 END SUBROUTINE test
  24
  25 PROGRAM main
  26   USE m
  27   EXTERNAL :: ext_sub
  28   EXTERNAL :: test
  29   INTEGER :: ext_func
  30
  31   CALL ext_sub () ! { dg-bogus "is not explicitly declared" }
  32   PRINT *, ext_func () ! { dg-bogus "is not explicitly declared" }
  33   PRINT *, implicit_func () ! { dg-bogus "is not explicitly declared" }
  34   CALL my_sub () ! { dg-bogus "is not explicitly declared" }
  35   PRINT *, my_func () ! { dg-bogus "is not explicitly declared" }
  36   PRINT *, SIN (3.14159) ! { dg-bogus "is not explicitly declared" }
  37
  38   CALL undef_sub (1, 2, 3) ! { dg-warning "is not explicitly declared" }
  39   ! Can't check undefined function, because it needs to be declared a type
  40   ! in any case (and the implicit type is enough to not trigger this warning).
  41 END PROGRAM