From a62fca1ebb0798676a11c5bda2406e36de654b6e Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Mon, 5 Jun 2006 16:36:45 -0300
Subject: BUG: debug hooks may get wrong when mixed with coroutines

---
 bugs | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

(limited to 'bugs')

diff --git a/bugs b/bugs
index 878117b1..a9f53823 100644
--- a/bugs
+++ b/bugs
@@ -974,3 +974,42 @@ lgc.c:
 +          g->estimate -= GCFINALIZECOST;
 ]]
 }
+
+
+But{
+
+what = [[debug hooks may get wrong when mixed with coroutines]],
+
+report = [[by Ivko Stanilov, 03/06/2006]],
+
+example = [[
+co = coroutine.create(function (a,b)
+   coroutine.yield(a, b)
+   return b, "end"
+end)
+
+debug.sethook(co, function() end, "lcr")
+coroutine.resume(co, 100, 2000)
+coroutine.resume(co, 100, 2000)
+]],
+
+patch = [[
+* ldo.c:
+@@ -389,6 +389,7 @@
+       return;
+   }
+   else {  /* resuming from previous yield */
++    L->status = 0;
+     if (!f_isLua(ci)) {  /* `common' yield? */
+       /* finish interrupted execution of `OP_CALL' */
+       lua_assert(GET_OPCODE(*((ci-1)->savedpc - 1)) == OP_CALL ||
+@@ -399,7 +400,6 @@
+     else  /* yielded inside a hook: just continue its execution */
+       L->base = L->ci->base;
+   }
+-  L->status = 0;
+   luaV_execute(L, cast_int(L->ci - L->base_ci));
+ }
+]],
+
+}
-- 
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