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-rw-r--r--src/stdio/puts.c6
1 files changed, 5 insertions, 1 deletions
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;
}