From 8bb7b5cceaaf96a5dd6321d35aae28748896d87b Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sat, 22 Aug 2020 19:44:49 +0200
Subject: Added *very* basic polling ipc

---
 libc/random.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'libc/random.c')

diff --git a/libc/random.c b/libc/random.c
index 7ad8a67..086fa11 100644
--- a/libc/random.c
+++ b/libc/random.c
@@ -19,6 +19,9 @@ u32 rand()
 
 char *randstr(u32 size)
 {
+	if (!size)
+		return NULL;
+
 	char *buf = malloc(size + 1);
 	const char charset[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
 
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