From ac2252793a6e2a380bd215f62291ca2fe4f973b2 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sun, 10 Oct 2021 15:36:53 +0000
Subject: init/printf: allow passing a nullptr to %s

---
 src/init/stdlib.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'src/init')

diff --git a/src/init/stdlib.c b/src/init/stdlib.c
index a60854b..4bc90d2 100644
--- a/src/init/stdlib.c
+++ b/src/init/stdlib.c
@@ -39,8 +39,10 @@ int printf(const char *fmt, ...) {
 				switch (c) {
 					case 's':
 						const char *s = va_arg(argp, char*);
-						_syscall_write(0, s, strlen(s), 0);
-						total += strlen(s);
+						if (s) {
+							_syscall_write(0, s, strlen(s), 0);
+							total += strlen(s);
+						}
 						break;
 
 					case 'x':
-- 
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