https://github.com/apache/mod_perl/commit/991cfeca9bac185f191510e0064f174d45718e6a

From 991cfeca9bac185f191510e0064f174d45718e6a Mon Sep 17 00:00:00 2001
From: Steve Hay <stevehay@apache.org>
Date: Tue, 27 Jun 2023 08:38:15 +0000
Subject: [PATCH] Stop using do_open9() - this deprecated function was removed
 in 5.37.1

Patch by Jitka Plesnikova <jplesnik@redhat.com> from https://rt.cpan.org/Ticket/Display.html?id=148451

git-svn-id: https://svn.apache.org/repos/asf/perl/modperl/trunk@1910623 13f79535-47bb-0310-9956-ffa450edef68
--- a/src/modules/perl/modperl_io.c
+++ b/src/modules/perl/modperl_io.c
@@ -116,8 +116,8 @@ modperl_io_perlio_override_stdhandle(pTHX_ request_rec *r, int mode)
     save_gp(handle, 1);
 
     sv_setref_pv(sv, "Apache2::RequestRec", (void*)r);
-    status = do_open9(handle, mode == O_RDONLY ? "<:Apache2" : ">:Apache2",
-                      9, FALSE, mode, 0, (PerlIO *)NULL, sv, 1);
+    status = do_openn(handle, mode == O_RDONLY ? "<:Apache2" : ">:Apache2",
+                      9, FALSE, mode, 0, (PerlIO *)NULL, &sv, 1);
     if (status == 0) {
         Perl_croak(aTHX_ "Failed to open STD%s: %" SVf,
                    mode == O_RDONLY ? "IN" : "OUT", get_sv("!", TRUE));