Merge branch 'PHP-8.1' into PHP-8.2

Author: devnexen

NEWS

@@ -67,6 +67,9 @@ PHP                                                                        NEWS
   . Fixed bug #60994 (Reading a multibyte CLOB caps at 8192 chars).
     (Michael Voříšek)
 
+- PHPDBG:
+  . Fixed bug GH-10715 (heap buffer overflow on --run option misuse). (nielsdos)
+
 - PGSQL:
   . Fix GH-10672 (pg_lo_open segfaults in the strict_types mode). (girgias)
 

sapi/phpdbg/phpdbg_out.c

@@ -143,7 +143,11 @@ PHPDBG_API int phpdbg_vprint(int type, int fd, const char *strfmt, va_list args)
 		return msglen;
 	}
 
-	len = phpdbg_process_print(fd, type, msg, msglen);
+	if (UNEXPECTED(msglen == 0)) {
+		len = 0;
+	} else {
+		len = phpdbg_process_print(fd, type, msg, msglen);
+	}
 
 	if (msg) {
 		free(msg);