https://bbs.archlinux.org/viewtopic.php?id=144949
--- a/gcc/config/i386/linux-unwind.h	2011-01-03 20:52:22.000000000 +0000
+++ b/gcc/config/i386/linux-unwind.h	2012-07-06 12:23:51.562859470 +0100
@@ -133,9 +133,9 @@
     {
       struct rt_sigframe {
 	int sig;
-	struct siginfo *pinfo;
+	siginfo_t *pinfo;
 	void *puc;
-	struct siginfo info;
+	siginfo_t info;
 	struct ucontext uc;
       } *rt_ = context->cfa;
       /* The void * cast is necessary to avoid an aliasing warning.