From: Rich Felker <dalias@aerifal.cx>
Date: Fri, 25 Mar 2011 02:58:21 +0000 (-0400)
Subject: fix non-atomicity of puts
X-Git-Tag: v0.7.5~45
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=8ae2fa65636b732e04e19b2521edc335867ba53b;p=oweals%2Fmusl.git

fix non-atomicity of puts
---

diff --git a/src/stdio/puts.c b/src/stdio/puts.c
index eb70efdc..4c0e583c 100644
--- a/src/stdio/puts.c
+++ b/src/stdio/puts.c
@@ -2,5 +2,9 @@
 
 int puts(const char *s)
 {
-	return -(fputs(s, stdout) < 0 || putchar('\n') < 0);
+	int r;
+	FLOCK(stdout);
+	r = -(fputs(s, stdout) < 0 || putchar('\n') < 0);
+	FUNLOCK(stdout);
+	return r;
 }