Merge branch 'PHP-7.3' into PHP-7.4

Author: nikic

ext/pcntl/pcntl.c

@@ -1265,6 +1265,12 @@ static void pcntl_siginfo_to_zval(int signo, siginfo_t *siginfo, zval *user_sigi
 				break;
 #endif
 		}
+#if defined(SIGRTMIN) && defined(SIGRTMAX)
+		if (SIGRTMIN <= signo && signo <= SIGRTMAX) {
+			add_assoc_long_ex(user_siginfo, "pid", sizeof("pid")-1, siginfo->si_pid);
+			add_assoc_long_ex(user_siginfo, "uid", sizeof("uid")-1, siginfo->si_uid);
+		}
+#endif
 	}
 }
 /* }}} */

ext/pcntl/tests/pcntl_realtime_signal.phpt

@@ -0,0 +1,20 @@
+--TEST--
+pcntl_signal() context of realtime signal
+--SKIPIF--
+<?php if (!defined('SIGRTMIN')) die("skip realtime signal not supported"); ?>
+<?php if (!extension_loaded("pcntl")) print "skip"; ?>
+<?php if (!extension_loaded("posix")) die("skip posix extension not available"); ?>
+--FILE--
+<?php
+
+pcntl_signal(SIGRTMIN, function ($signo, $siginfo) {
+    printf("got realtime signal from %s, ruid:%s\n", $siginfo['pid'] ?? '', $siginfo['uid'] ?? '');
+});
+posix_kill(posix_getpid(), SIGRTMIN);
+pcntl_signal_dispatch();
+
+echo "ok\n";
+?>
+--EXPECTF--
+%rgot realtime signal from \d+, ruid:\d+%r
+ok