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diff --git a/gcc/testsuite/gfortran.dg/generic_12.f90 b/gcc/testsuite/gfortran.dg/generic_12.f90
new file mode 100644
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+++ b/gcc/testsuite/gfortran.dg/generic_12.f90
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+! { dg-do compile }
+! Test the fix for PR30476 in which the generic interface hello
+! was found incorrectly to be ambiguous.
+!
+!Contributed by Tobias Burnus <burnus@gcc.gnu.org>
+!
+SUBROUTINE hello_x(dum)
+   IMPLICIT NONE
+   INTEGER :: dum
+   WRITE(0,*) "Hello world: ", dum
+END SUBROUTINE hello_x
+
+MODULE interfaces
+IMPLICIT NONE
+INTERFACE hello
+   SUBROUTINE hello_x(dum)
+      IMPLICIT NONE
+      INTEGER :: dum
+   END SUBROUTINE hello_x
+END INTERFACE
+END MODULE interfaces
+
+MODULE global_module
+  USE interfaces
+END MODULE global_module
+
+PROGRAM main
+  USE global_module
+  IMPLICIT NONE
+  CALL hello(10)
+END PROGRAM main
+! { dg-final { cleanup-modules "interfaces global_module" } }