[Qemu-devel] Build broken

[malc]

/home/malc/x/rcs/git/qemuorg/coroutine-ucontext.c: In function 'coroutine_new':
/home/malc/x/rcs/git/qemuorg/coroutine-ucontext.c:160:16: error: 'arg.i[1]' may 
be used uninitialized in this function
/home/malc/x/rcs/git/qemuorg/coroutine-ucontext.c:136:18: note: 'arg.i[1]' was 
declared here

diff --git a/coroutine-ucontext.c b/coroutine-ucontext.c
index 41c2379..42dc3e2 100644
--- a/coroutine-ucontext.c
+++ b/coroutine-ucontext.c
@@ -133,7 +133,7 @@ static Coroutine *coroutine_new(void)
     CoroutineUContext *co;
     ucontext_t old_uc, uc;
     jmp_buf old_env;
-    union cc_arg arg;
+    union cc_arg arg = {0};
 
     /* The ucontext functions preserve signal masks which incurs a system call
      * overhead.  setjmp()/longjmp() does not preserve signal masks but only

I guess gcc should yell not only here on ppc32 but on any machine where
pointer size is less than the size of two ints.

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