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diff --git a/gcc/testsuite/gfortran.dg/pr32242.f90 b/gcc/testsuite/gfortran.dg/pr32242.f90
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+!PR fortran/32242
+! { dg-do compile }
+! { dg-options "-Wreturn-type" }
+! { dg-final { cleanup-modules "kahan_sum" } }
+
+MODULE kahan_sum
+  INTEGER, PARAMETER :: dp=KIND(0.0D0)
+  INTERFACE accurate_sum
+    MODULE PROCEDURE kahan_sum_d1, kahan_sum_z1
+  END INTERFACE accurate_sum
+  TYPE pw_grid_type
+     REAL (KIND=dp), DIMENSION ( : ), POINTER :: gsq
+  END TYPE pw_grid_type
+  TYPE pw_type
+     REAL (KIND=dp), DIMENSION ( : ), POINTER :: cr
+     COMPLEX (KIND=dp), DIMENSION ( : ), POINTER :: cc
+     TYPE ( pw_grid_type ), POINTER :: pw_grid
+  END TYPE pw_type
+CONTAINS
+ FUNCTION kahan_sum_d1(array,mask) RESULT(ks)         ! { dg-warning "not set" }
+   REAL(KIND=dp), DIMENSION(:), INTENT(IN)  :: array
+   LOGICAL, DIMENSION(:), INTENT(IN), &
+     OPTIONAL                               :: mask
+   REAL(KIND=dp)                            :: ks
+ END FUNCTION kahan_sum_d1
+  FUNCTION kahan_sum_z1(array,mask) RESULT(ks)        ! { dg-warning "not set" }
+    COMPLEX(KIND=dp), DIMENSION(:), &
+      INTENT(IN)                             :: array
+    LOGICAL, DIMENSION(:), INTENT(IN), &
+      OPTIONAL                               :: mask
+    COMPLEX(KIND=dp)                         :: ks
+  END FUNCTION kahan_sum_z1
+
+FUNCTION pw_integral_a2b ( pw1, pw2 ) RESULT ( integral_value )
+    TYPE(pw_type), INTENT(IN)                :: pw1, pw2
+    REAL(KIND=dp)                            :: integral_value
+     integral_value = accurate_sum ( REAL ( CONJG ( pw1 % cc ( : ) ) &
+          *  pw2 % cc ( : ) ,KIND=dp) * pw1 % pw_grid % gsq ( : ) )
+END FUNCTION pw_integral_a2b
+END MODULE