gcc/testsuite/gfortran.dg/volatile7.f90

   1 ! { dg-do compile }
   2 ! { dg-options "-O2 -fdump-tree-optimized" }
   3 ! Tests whether volatile really works for pointers
   4 ! PR fortran/29601
   5 logical, pointer, volatile :: t1
   6 logical, pointer :: t2
   7 integer :: i
   8
   9 t1 => NULL(t1)
  10 if(associated(t1)) print *, 'VolatileNotOptimizedAway'
  11 t2 => NULL(t2)
  12 if(associated(t2)) print *, 'NonVolatileNotOptimizedAway'
  13 end
  14 ! { dg-final { scan-tree-dump "VolatileNotOptimizedAway" "optimized" } }
  15 ! { dg-final { scan-tree-dump-not "NonVolatileNotOptimizedAway" "optimized" } }
  16 ! { dg-final { cleanup-tree-dump "optimized" } }