2 files changed, 2 insertions, 0 deletions
diff --git a/coro.c b/coro.c
index cd79d58..79e2ddc 100644
--- a/coro.c
+++ b/coro.c
@@ -307,6 +307,7 @@ coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, long ssiz
   #endif
 
   ctx->sp -= NUM_SAVED;
+  memset (ctx->sp, 0, sizeof (*ctx->sp) * NUM_SAVED);
 
 # elif CORO_UCONTEXT
 
diff --git a/coro.h b/coro.h
index 19f0a8d..a4c8b0b 100644
--- a/coro.h
+++ b/coro.h
@@ -70,6 +70,7 @@
  * 2008-11-19 define coro_*jmp symbols for easier porting.
  * 2009-06-23 tentative win32-backend support for mingw32 (Yasuhiro Matsumoto).
  * 2010-12-03 tentative support for uclibc (which lacks all sorts of things).
+ * 2011-05-30 set initial callee-saved-registers to zero with CORO_ASM.
  */
 
 #ifndef CORO_H