1 files changed, 35 insertions, 0 deletions
diff --git a/meson/test cases/fortran/19 fortran_std/std2018.f90 b/meson/test cases/fortran/19 fortran_std/std2018.f90
new file mode 100644
index 000000000..34fad50bf
--- /dev/null
+++ b/meson/test cases/fortran/19 fortran_std/std2018.f90
@@ -0,0 +1,35 @@
+program main
+use, intrinsic :: iso_fortran_env, only : error_unit, sp=>real32, dp=>real64
+implicit none
+
+real(sp) :: a32
+real(dp) :: a64
+
+real(sp), parameter :: pi32 = 4*atan(1._sp)
+real(dp), parameter :: pi64 = 4*atan(1._dp)
+
+if (pi32 == pi64) error stop 'real32 values generally do not exactly equal real64 values'
+
+call timestwo(a32)
+call timestwo(a64)
+
+contains
+
+elemental subroutine timestwo(a)
+
+class(*), intent(inout) :: a
+
+select type (a)
+  type is (real(sp))
+    a = 2*a
+  type is (real(dp))
+    a = 2*a
+  type is (integer)
+    a = 2*a
+  class default
+    error stop 'requires real32, real64 or integer'
+end select
+
+end subroutine timestwo
+
+end program