1 files changed, 45 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/class_12.f03 b/gcc/testsuite/gfortran.dg/class_12.f03
new file mode 100644
index 00000000000..56c68a57787
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+++ b/gcc/testsuite/gfortran.dg/class_12.f03
@@ -0,0 +1,45 @@
+! { dg-do compile }
+!
+! PR 41556: [OOP] Errors in applying operator/assignment to an abstract type
+!
+! Contributed by Damian Rouson <damian@rouson.net>
+
+module abstract_algebra
+  implicit none 
+  private      
+  public :: rescale
+  public :: object
+
+  type ,abstract :: object
+  contains
+    procedure(assign_interface) ,deferred :: assign   
+    procedure(product_interface) ,deferred :: product
+    generic  :: assignment(=) => assign
+    generic  :: operator(*) => product
+  end type 
+
+  abstract interface
+    function product_interface(lhs,rhs) result(product)
+      import :: object
+      class(object) ,intent(in)  :: lhs
+      class(object) ,allocatable :: product
+      real          ,intent(in)  :: rhs
+    end function 
+    subroutine assign_interface(lhs,rhs) 
+      import :: object 
+      class(object) ,intent(inout) :: lhs
+      class(object) ,intent(in)    :: rhs
+    end subroutine 
+  end interface
+
+contains
+
+  subroutine rescale(operand,scale)    
+    class(object)    :: operand
+    real ,intent(in) :: scale
+    operand = operand*scale
+    operand = operand%product(scale)
+  end subroutine 
+end module
+
+! { dg-final { cleanup-modules "abstract_algebra" } }