gcc/testsuite/gfortran.dg/warn_alias.f90

   1 ! { dg-do compile }
   2 ! { dg-options "-Waliasing" }
   3 !
   4 ! PR fortran/57991
   5 !
   6 ! Added check for OUT/OUT. IN/OUT and OUT/IN where already check
   7 ! since GCC 4.0, but not being tested for.
   8
   9       Program q
  10         integer :: x
  11         x = 5
  12         Call test1(x, x) ! { dg-warning "Same actual argument associated with INTENT.OUT. argument 'a' and INTENT.OUT. argument 'b'" }
  13         Call test2(x, x) ! { dg-warning "Same actual argument associated with INTENT.IN. argument 'a' and INTENT.OUT. argument 'b'" }
  14         Call test3(x, x) ! { dg-warning "Same actual argument associated with INTENT.OUT. argument 'a' and INTENT.IN. argument 'b'" }
  15       Contains
  16         Subroutine test1(a,b)
  17           Integer, intent(out) :: a
  18           Integer, intent(out) :: b
  19           b = 5
  20           a = 5
  21         End Subroutine
  22         Subroutine test2(a,b)
  23           Integer, intent(in) :: a
  24           Integer, intent(out) :: b
  25           b = 5 + a
  26         End Subroutine
  27         Subroutine test3(a,b)
  28           Integer, intent(out) :: a
  29           Integer, intent(in) :: b
  30           a = 5 + b
  31         End Subroutine
  32       End Program
  33