From 4ccb8e11c364feb89ec09d59b400ce5066645148 Mon Sep 17 00:00:00 2001
From: Sjoerd Langkemper <sjoerd-github@linuxonly.nl>
Date: Sun, 18 Oct 2026 16:12:19 +0000
Subject: [PATCH] sapi/cli/tests: use kill -0 in pdeathsig test

BusyBox ps, as used on Alpine, does not support -p. Check whether the
worker processes still exist with the POSIX kill -0 builtin instead.
The poll loop already waits for the workers to disappear, so transient
zombies are handled.

Use command -v instead of which to detect pgrep, and skip when
shell_exec() is unavailable.
---
 sapi/cli/tests/php_cli_server_pdeathsig.phpt | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/sapi/cli/tests/php_cli_server_pdeathsig.phpt b/sapi/cli/tests/php_cli_server_pdeathsig.phpt
index 66a76a84ccaf..c56baec058fb 100644
--- a/sapi/cli/tests/php_cli_server_pdeathsig.phpt
+++ b/sapi/cli/tests/php_cli_server_pdeathsig.phpt
@@ -9,7 +9,8 @@ if (!(str_contains(PHP_OS, 'Linux') || str_contains(PHP_OS, 'FreeBSD'))) {
     die('skip PDEATHSIG is only supported on Linux and FreeBSD');
 }
 if (@file_exists('/.dockerenv')) die("skip Broken in Docker");
-if (!shell_exec("which pgrep")) die("skip Missing pgrep command");
+if (!function_exists('shell_exec')) die("skip shell_exec() is not available");
+if (!shell_exec("command -v pgrep")) die("skip Missing pgrep command");
 ?>
 --FILE--
 <?php
@@ -23,7 +24,13 @@ function find_workers_by_ppid(string $ppid) {
 }
 
 function find_workers_by_pids(array $pids) {
-    return split_words(shell_exec('ps -o pid= -p ' . join(',', $pids)));
+    $workers = [];
+    foreach ($pids as $pid) {
+        if (shell_exec('kill -0 ' . (int) $pid . ' 2>/dev/null && echo 1') !== null) {
+            $workers[] = $pid;
+        }
+    }
+    return $workers;
 }
 
 include "php_cli_server.inc";