diff -ruN perl-5.28.2-orig/t/porting/libperl.t perl-5.28.2/t/porting/libperl.t
--- perl-5.28.2-orig/t/porting/libperl.t	2018-11-01 17:07:59.000000000 -0500
+++ perl-5.28.2/t/porting/libperl.t	2020-09-30 05:43:25.000000000 -0500
@@ -437,7 +437,7 @@
         $symbols{data}{common} = $symbols{data}{bss};
     }
 
-    ok($symbols{data}{common}{PL_hash_seed}{'globals.o'}, "has PL_hash_seed");
+    ok(!$symbols{data}{common}{PL_hash_seed}{'globals.o'}, "has no PL_hash_seed");
     ok($symbols{data}{data}{PL_ppaddr}{'globals.o'}, "has PL_ppaddr");
 
     # None of the GLOBAL_STRUCT* business here.
@@ -574,9 +574,11 @@
         while (<$nm_err_fh>) {
             # OS X has weird error where nm warns about
             # "no name list" but then outputs fine.
-            if (/nm: no name list/ && $^O eq 'darwin') {
-                print "# $^O ignoring $nm output: $_";
-                next;
+             if ( $^O eq 'darwin' ) {
+                if (/nm: no name list/ || /^(.*: )?no symbols$/ ) {
+                    print "# $^O ignoring $nm output: $_";
+                    next;
+                }
             }
             warn "$0: Unexpected $nm error: $_";
             $error++;
From b1db17763c817dd84f06c0147a2bc60fe1bfe639 Mon Sep 17 00:00:00 2001
From: Tony Cook <tony@develop-help.com>
Date: Wed, 24 May 2023 13:22:38 +1000
Subject: [PATCH] porting/libperl.t: handle nm output on Mac OS Ventura 13.4

Fixes #21117
---
 t/porting/libperl.t | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/t/porting/libperl.t b/t/porting/libperl.t
index 68da29b7cf67..6d05a2be007e 100644
--- a/t/porting/libperl.t
+++ b/t/porting/libperl.t
@@ -245,7 +245,8 @@ sub nm_parse_gnu {
 sub nm_parse_darwin {
     my $symbols = shift;
     my $line = $_;
-    if (m{^(?:.+)?libperl\.a\((\w+\.o)\):$}) {
+    if (m{^(?:.+)?libperl\.a\((\w+\.o)\):$} ||
+        m{^(\w+\.o):$}) {
         # object file name
         $symbols->{obj}{$1}++;
         $symbols->{o} = $1;