1 files changed, 39 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/class_allocate_3.f03 b/gcc/testsuite/gfortran.dg/class_allocate_3.f03
new file mode 100644
index 000000000..c6128a8ab
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/class_allocate_3.f03
@@ -0,0 +1,39 @@
+! { dg-do run }
+!
+! PR 41581: [OOP] Allocation of a CLASS with SOURCE=<class> does not work
+!
+! Contributed by Tobias Burnus <burnus@gcc.gnu.org>
+
+ type t
+ end type t
+
+ type,extends(t) :: t2
+   integer :: i = 54
+   real :: r = 384.02
+ end type t2
+
+ class(t), allocatable :: m1, m2
+
+ allocate(t2 :: m2)
+ select type(m2)
+ type is (t2)
+   print *, m2%i, m2%r
+   if (m2%i/=54) call abort()
+   if (abs(m2%r-384.02)>1E-3) call abort()
+   m2%i = 42
+   m2%r = -4.0
+ class default
+   call abort()
+ end select
+
+ allocate(m1, source=m2)
+ select type(m1)
+ type is (t2)
+   print *, m1%i, m1%r
+   if (m1%i/=42) call abort()
+   if (abs(m1%r+4.0)>1E-3) call abort()
+ class default
+   call abort()
+ end select
+
+end