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! { dg-do compile }
! { dg-options "-O2 -fdump-tree-optimized" }
! Tests that volatile can be applied to members of common blocks or
! equivalence groups (PR fortran/35037)
!
subroutine wait1
logical event
volatile event
common /dd/ event
event = .false.
do
if (event) print *, 'NotOptimizedAway1'
end do
end subroutine
subroutine wait2
logical event, foo
volatile event
equivalence (event, foo)
event = .false.
do
if (event) print *, 'NotOptimizedAway2'
end do
end subroutine
subroutine wait3
logical event
integer foo
volatile foo
equivalence (event, foo)
event = .false.
do
if (event) print *, 'IsOptimizedAway'
end do
end subroutine
! { dg-final { scan-tree-dump "NotOptimizedAway1" "optimized" } } */
! { dg-final { scan-tree-dump "NotOptimizedAway2" "optimized" } } */
! { dg-final { scan-tree-dump-not "IsOptimizedAway" "optimized" } } */
! { dg-final { cleanup-tree-dump "optimized" } } */
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