--- libcoro/coro.c	2010/12/03 19:21:59	1.53
+++ libcoro/coro.c	2011/05/30 02:21:54	1.55
@@ -212,8 +212,8 @@
     }
 
   /* set the new stack */
-  nstk.ss_sp    = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */
-  nstk.ss_size  = STACK_ADJUST_SIZE (sptr,ssize);
+  nstk.ss_sp    = STACK_ADJUST_PTR (sptr, ssize); /* yes, some platforms (IRIX) get this wrong. */
+  nstk.ss_size  = STACK_ADJUST_SIZE (sptr, ssize);
   nstk.ss_flags = 0;
 
   if (sigaltstack (&nstk, &ostk) < 0)
@@ -307,6 +307,7 @@
   #endif
 
   ctx->sp -= NUM_SAVED;
+  memset (ctx->sp, 0, sizeof (*ctx->sp) * NUM_SAVED);
 
 # elif CORO_UCONTEXT
 
@@ -405,7 +406,8 @@
 
       pthread_attr_init (&attr);
 #if __UCLIBC__
-      pthread_attr_setstacksize (&attr, (size_t)ssize);
+      /* exists, but is borked */
+      /*pthread_attr_setstacksize (&attr, (size_t)ssize);*/
 #else
       pthread_attr_setstack (&attr, sptr, (size_t)ssize);
 #endif