1 files changed, 41 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/interface_31.f90 b/gcc/testsuite/gfortran.dg/interface_31.f90
new file mode 100644
index 000000000..3b0e8f828
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/interface_31.f90
@@ -0,0 +1,41 @@
+! { dg-do compile }
+! PR42684 (42680) Ice with Interface.
+MODULE mod1
+  IMPLICIT NONE  
+  TYPE ta
+    INTEGER i
+  END TYPE ta
+  INTERFACE OPERATOR(+)
+    MODULE PROCEDURE add_a
+  END INTERFACE OPERATOR(+)  
+CONTAINS  
+  FUNCTION add_a(lhs, rhs) RESULT(r)
+    TYPE(ta), INTENT(IN) :: lhs
+    TYPE(ta), INTENT(IN) :: rhs
+    TYPE(ta) :: r
+    !****
+    r%i = lhs%i + rhs%i
+  END FUNCTION add_a  
+END MODULE mod1
+
+MODULE mod2
+  IMPLICIT NONE 
+  TYPE tb
+    INTEGER j
+  END TYPE tb
+  INTERFACE OPERATOR(+)
+    MODULE PROCEDURE add_b
+  END INTERFACE OPERATOR(+)  
+CONTAINS  
+  SUBROUTINE other_proc()
+    USE mod1    ! Causes ICE
+  END SUBROUTINE other_proc  
+  FUNCTION add_b(lhs, rhs) RESULT(r)
+    TYPE(tb), INTENT(IN) :: lhs
+    TYPE(tb), INTENT(IN) :: rhs
+    TYPE(tb) :: r
+    !****
+    r%j = lhs%j + rhs%j
+  END FUNCTION add_b  
+END MODULE mod2
+! { dg-final { cleanup-modules "mod1 mod2" } }