coroutine: co->fiber has not to be null

CreateFiber() will be return NULL when it fails. If co->fiber is null,
SwitchToFiber() aborts with C0000005 and it corrupts stack that make
hard to find causes. So it is better to abort when CreateFiber()
returns NULL.

Change-Id: Ifdc36404ce523cee842fd486bdbe071e58b7d7b3
Signed-off-by: SeokYeon Hwang <syeon.hwang@samsung.com>

diff --git a/coroutine-win32.c b/coroutine-win32.c
index 17ace37..8941e03 100644 (file)
--- a/coroutine-win32.c
+++ b/coroutine-win32.c
@@ -75,6 +75,9 @@ Coroutine *qemu_coroutine_new(void)
 
     co = g_malloc0(sizeof(*co));
     co->fiber = CreateFiber(stack_size, coroutine_trampoline, &co->base);
+
+    g_assert(co->fiber);
+
     return &co->base;
 }