2 files changed, 2 insertions, 0 deletions
diff --git a/coroutine/ucontext/Context.c b/coroutine/ucontext/Context.c
index 9ba76ee628..5d728d554d 100644
--- a/coroutine/ucontext/Context.c
+++ b/coroutine/ucontext/Context.c
@@ -11,6 +11,7 @@
 #if defined(__sun) && !defined(__EXTENSIONS__)
 #define __EXTENSIONS__
 #endif
+
 #include "Context.h"
 
 void coroutine_trampoline(void * _start, void * _context)
diff --git a/coroutine/ucontext/Context.h b/coroutine/ucontext/Context.h
index 39d7ca70ca..d338d8de60 100644
--- a/coroutine/ucontext/Context.h
+++ b/coroutine/ucontext/Context.h
@@ -27,6 +27,7 @@ struct coroutine_context
 {
     ucontext_t state;
     struct coroutine_context * from;
+    void *argument;
 };
 
 typedef COROUTINE(* coroutine_start)(struct coroutine_context *from, struct coroutine_context *self);