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+! { dg-do run }
+!
+! This tests that blank common works in modules. PR23270
+! Contributed by Paul Thomas <pault@gcc.gnu.org>
+!
+module global
+ common a, b
+ real a, b
+end module global
+program blank_common
+ use global
+ common z
+ complex z
+ a = 999.0_4
+ b = -999.0_4
+ if (z.ne.cmplx (a,b)) call abort ()
+end program blank_common
+
+! { dg-final { cleanup-modules "global" } }