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diff --git a/gcc/testsuite/gfortran.dg/interface_2.f90 b/gcc/testsuite/gfortran.dg/interface_2.f90
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+++ b/gcc/testsuite/gfortran.dg/interface_2.f90
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+! { dg-do compile }
+! PR fortran/24545
+MODULE Compare_Float_Numbers
+
+  IMPLICIT NONE
+
+  INTERFACE Compare_Float
+    MODULE PROCEDURE Compare_Float_Single
+  END INTERFACE Compare_Float
+
+  INTERFACE OPERATOR (.EqualTo.)
+    MODULE PROCEDURE Is_Equal_To_Single
+  END INTERFACE OPERATOR (.EqualTo.)
+
+CONTAINS
+
+  FUNCTION Is_Equal_To_Single(x, y) RESULT(Equal_To)
+    REAL(4), INTENT(IN) :: x, y
+    LOGICAL :: Equal_To
+    Equal_To = .true.
+  END FUNCTION Is_Equal_To_Single
+
+  FUNCTION Compare_Float_Single(x, y) RESULT(Compare)
+    REAL(4), INTENT(IN) :: x, y
+    LOGICAL :: Compare
+    Compare = .true.
+  END FUNCTION Compare_Float_Single
+
+END MODULE Compare_Float_Numbers
+
+! { dg-final { cleanup-modules "Compare_Float_Numbers" } }