1 files changed, 25 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/extends_7.f03 b/gcc/testsuite/gfortran.dg/extends_7.f03
new file mode 100644
index 000000000..ebb2fcc3e
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/extends_7.f03
@@ -0,0 +1,25 @@
+! { dg-do compile }
+! Check for re-definition of inherited components in the sub-type.
+
+MODULE m1
+  IMPLICIT NONE
+
+  TYPE supert
+    INTEGER :: c1
+    INTEGER, PRIVATE :: c2
+  END TYPE supert
+
+END MODULE m1
+
+MODULE m2
+  USE m1 ! { dg-error "already in the parent type" }
+  IMPLICIT NONE
+
+  TYPE, EXTENDS(supert) :: subt
+    INTEGER :: c1 ! { dg-error "already in the parent type" }
+    INTEGER :: c2 ! { dg-error "already in the parent type" }
+  END TYPE subt
+
+END MODULE m2
+
+! { dg-final { cleanup-modules "m1 m2" } }