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diff --git a/gcc/testsuite/gfortran.dg/whole_file_4.f90 b/gcc/testsuite/gfortran.dg/whole_file_4.f90
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+! { dg-do compile }
+! { dg-options "-fwhole-file -std=legacy" }
+! Tests the fix for PR24886 in which the mismatch between the
+! character lengths of the actual and formal arguments of
+! 'foo' was not detected.
+!
+! Contributed by Uttam Pawar <uttamp@us.ibm.com>
+!
+        subroutine foo(y)
+           character(len=20) :: y
+           y = 'hello world'
+        end
+
+        program test
+           character(len=10) :: x
+           call foo(x) ! { dg-warning "actual argument shorter" }
+           write(*,*) 'X=',x
+           pause
+        end