prototypes for brk and sbrk

diff --git a/include/unistd.h b/include/unistd.h
index b9e4814..c0994af 100644 (file)
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -144,6 +144,8 @@ void sync(void);
 #endif
 
 #ifdef _GNU_SOURCE
+int brk(void *);
+void *sbrk(intptr_t);
 pid_t vfork(void);
 int vhangup(void);
 int chroot(const char *);