1 files changed, 35 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/interface_assignment_4.f90 b/gcc/testsuite/gfortran.dg/interface_assignment_4.f90
new file mode 100644
index 000000000..d55af2905
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/interface_assignment_4.f90
@@ -0,0 +1,35 @@
+! { dg-do compile }
+!
+! PR 40743: [4.5 Regression] ICE when compiling iso_varying_string.f95 at revision 149591
+!
+! Reduced from http://www.fortran.com/iso_varying_string.f95
+! Contributed by Janus Weil <janus@gcc.gnu.org>
+
+  implicit none
+
+  type :: varying_string
+  end type
+
+  interface assignment(=)
+     procedure op_assign_VS_CH
+  end interface
+
+contains
+
+  subroutine op_assign_VS_CH (var, exp) ! { dg-warning "Extension: Internal procedure" }
+    type(varying_string), intent(out) :: var
+    character(LEN=*), intent(in)      :: exp
+  end subroutine
+
+  subroutine split_VS
+    type(varying_string) :: string
+    call split_CH(string)
+  end subroutine
+
+  subroutine split_CH (string)
+    type(varying_string) :: string
+    string = ""
+  end subroutine
+
+end
+