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diff --git a/gcc/testsuite/gfortran.dg/entry_6.f90 b/gcc/testsuite/gfortran.dg/entry_6.f90
new file mode 100644
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+++ b/gcc/testsuite/gfortran.dg/entry_6.f90
@@ -0,0 +1,56 @@
+! { dg-do run }
+! Tests the fix for PR24558, which reported that module
+! alternate function entries did not work.
+!
+! Contributed by Erik Edelmann  <eedelman@gcc.gnu.org>
+!
+module foo
+contains
+    function n1 (a)
+        integer :: n1, n2, a, b
+        integer, save :: c
+        c = a
+        n1 = c**3
+        return
+    entry n2 (b)
+        n2 = c * b
+        n2 = n2**2
+        return
+    end function n1
+    function z1 (u)
+        complex :: z1, z2, u, v
+        z1 = (1.0, 2.0) * u
+        return
+    entry z2 (v)
+        z2 = (3, 4) * v
+        return
+    end function z1
+    function n3 (d)
+        integer :: n3, d
+        n3 = n2(d) * n1(d) ! Check sibling references.
+        return
+    end function n3
+    function c1 (a)
+        character(4) :: c1, c2, a, b
+        c1 = a
+        if (a .eq. "abcd") c1 = "ABCD"
+        return
+    entry c2 (b)
+        c2 = b
+        if (b .eq. "wxyz") c2 = "WXYZ"
+        return
+    end function c1
+end module foo
+    use foo
+    if (n1(9) .ne. 729) call abort ()
+    if (n2(2) .ne. 324) call abort ()
+    if (n3(19) .ne. 200564019) call abort ()
+    if (c1("lmno") .ne. "lmno") call abort ()
+    if (c1("abcd") .ne. "ABCD") call abort ()
+    if (c2("lmno") .ne. "lmno") call abort ()
+    if (c2("wxyz") .ne. "WXYZ") call abort ()
+    if (z1((3,4)) .ne. (-5, 10)) call abort ()
+    if (z2((5,6)) .ne. (-9, 38)) call abort ()
+ end
+
+! { dg-final { cleanup-modules "foo" } }