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+! { dg-do compile }
+! { dg-options "-std=legacy" }
+!
+! Tests the fix for PR20867 in which implicit typing was not done within
+! statement functions and so was not confirmed or not by subsequent
+! type delarations.
+!
+! Contributed by Joost VandeVondele <jv244@cam.ac.uk>
+!
+ REAL :: st1
+ st1(I)=I**2
+ REAL :: I ! { dg-error " already has basic type of INTEGER" }
+ END
+
+