1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/volatile6.f90 b/gcc/testsuite/gfortran.dg/volatile6.f90
new file mode 100644
index 000000000..e42e3de3a
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/volatile6.f90
@@ -0,0 +1,26 @@
+! { dg-do compile }
+! { dg-options "-O2 -fdump-tree-optimized" }
+! Tests whether volatile really works for arrays
+! PR fortran/29601
+logical, allocatable, volatile :: t1(:)
+logical, allocatable :: t2(:)
+integer :: i
+
+allocate(t1(1),t2(1))
+t1 = .false.
+t2 = .false.
+do i = 1, 2
+  if(ubound(t1,1) /= 1) print *, 'VolatileNotOptimizedAway1'
+  if(ubound(t2,1) /= 1) print *, 'NonVolatileNotOptimizedAway1'
+end do
+
+t1 = .false.
+if(t1(1)) print *, 'VolatileNotOptimizedAway2'
+t2 = .false.
+if(t2(1)) print *, 'NonVolatileNotOptimizedAway2'
+end
+! { dg-final { scan-tree-dump "VolatileNotOptimizedAway1" "optimized" } }
+! { dg-final { scan-tree-dump "VolatileNotOptimizedAway2" "optimized" } }
+! { dg-final { scan-tree-dump-not "NonVolatileNotOptimizedAway1" "optimized" } }
+! { dg-final { scan-tree-dump-not "NonVolatileNotOptimizedAway2" "optimized" } }
+! { dg-final { cleanup-tree-dump "optimized" } }