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diff --git a/libgomp/testsuite/libgomp.fortran/lib1.f90 b/libgomp/testsuite/libgomp.fortran/lib1.f90
new file mode 100644
index 00000000..88400186
--- /dev/null
+++ b/libgomp/testsuite/libgomp.fortran/lib1.f90
@@ -0,0 +1,76 @@
+! { dg-do run }
+
+  use omp_lib
+
+  double precision :: d, e
+  logical :: l
+  integer (kind = omp_lock_kind) :: lck
+  integer (kind = omp_nest_lock_kind) :: nlck
+
+  d = omp_get_wtime ()
+
+  call omp_init_lock (lck)
+  call omp_set_lock (lck)
+  if (omp_test_lock (lck)) call abort
+  call omp_unset_lock (lck)
+  if (.not. omp_test_lock (lck)) call abort
+  if (omp_test_lock (lck)) call abort
+  call omp_unset_lock (lck)
+  call omp_destroy_lock (lck)
+
+  call omp_init_nest_lock (nlck)
+  if (omp_test_nest_lock (nlck) .ne. 1) call abort
+  call omp_set_nest_lock (nlck)
+  if (omp_test_nest_lock (nlck) .ne. 3) call abort
+  call omp_unset_nest_lock (nlck)
+  call omp_unset_nest_lock (nlck)
+  if (omp_test_nest_lock (nlck) .ne. 2) call abort
+  call omp_unset_nest_lock (nlck)
+  call omp_unset_nest_lock (nlck)
+  call omp_destroy_nest_lock (nlck)
+
+  call omp_set_dynamic (.true.)
+  if (.not. omp_get_dynamic ()) call abort
+  call omp_set_dynamic (.false.)
+  if (omp_get_dynamic ()) call abort
+
+  call omp_set_nested (.true.)
+  if (.not. omp_get_nested ()) call abort
+  call omp_set_nested (.false.)
+  if (omp_get_nested ()) call abort
+
+  call omp_set_num_threads (5)
+  if (omp_get_num_threads () .ne. 1) call abort
+  if (omp_get_max_threads () .ne. 5) call abort
+  if (omp_get_thread_num () .ne. 0) call abort
+  call omp_set_num_threads (3)
+  if (omp_get_num_threads () .ne. 1) call abort
+  if (omp_get_max_threads () .ne. 3) call abort
+  if (omp_get_thread_num () .ne. 0) call abort
+  l = .false.
+!$omp parallel reduction (.or.:l)
+  l = omp_get_num_threads () .ne. 3
+  l = l .or. (omp_get_thread_num () .lt. 0)
+  l = l .or. (omp_get_thread_num () .ge. 3)
+!$omp master
+  l = l .or. (omp_get_thread_num () .ne. 0)
+!$omp end master
+!$omp end parallel
+  if (l) call abort
+
+  if (omp_get_num_procs () .le. 0) call abort
+  if (omp_in_parallel ()) call abort
+!$omp parallel reduction (.or.:l)
+  l = .not. omp_in_parallel ()
+!$omp end parallel
+!$omp parallel reduction (.or.:l) if (.true.)
+  l = .not. omp_in_parallel ()
+!$omp end parallel
+
+  e = omp_get_wtime ()
+  if (d .gt. e) call abort
+  d = omp_get_wtick ()
+  ! Negative precision is definitely wrong,
+  ! bigger than 1s clock resolution is also strange
+  if (d .le. 0 .or. d .gt. 1.) call abort
+end