gcc/testsuite/gfortran.dg/volatile5.f90

   1 ! { dg-do compile }
   2 ! { dg-options "-O3 -fdump-tree-optimized" }
   3 ! Tests whether volatile really works with modules
   4 ! PR fortran/29601
   5 module volmod
   6   implicit none
   7   integer, volatile :: a
   8   logical :: b,c
   9   volatile :: b
  10 contains
  11   subroutine sample
  12     a = 33.
  13     if(a /= 432) print *,'aPresent'
  14
  15     b = .false.
  16     if(b) print *,'bPresent'
  17
  18     c = .false.
  19     if(c) print *,'cPresent'
  20   end subroutine sample
  21 end module volmod
  22
  23 program main
  24   use volmod
  25   implicit none
  26
  27   a = 432
  28   if(a /= 432) print *,'aStillPresent'
  29
  30   b = .false.
  31   if(b)        print *,'bStillPresent'
  32
  33   c = .false.
  34   if(c)        print *,'cStillPresent'
  35 end program main
  36 ! { dg-final { scan-tree-dump "aPresent" "optimized" } }
  37 ! { dg-final { scan-tree-dump "bPresent" "optimized" } }
  38 ! { dg-final { scan-tree-dump "aStillPresent" "optimized" } }
  39 ! { dg-final { scan-tree-dump "bStillPresent" "optimized" } }
  40 ! { dg-final { scan-tree-dump-not "cPresent" "optimized" } }
  41 ! { dg-final { scan-tree-dump-not "cStillPresent" "optimized" } }