fgets: avoid arithmetic overflow when n==INT_MIN is passed

[musl] / src / linux / brk.c

diff --git a/src/linux/brk.c b/src/linux/brk.c
index ffdbbd5..a6173e0 100644 (file)
--- a/src/linux/brk.c
+++ b/src/linux/brk.c
@@ -1,3 +1,5 @@
+#define _BSD_SOURCE
+#include <unistd.h>
 #include <errno.h>
 #include "syscall.h"