Bug in luaD_precall

[云风 <cloudwu@...>]

Try this lua program:

-----
function f(p1,p2,p3,p4,p5,p6,p7,p8,p9,...)
  local a1,a2,a3,a4,a5,a6,a7
  local a8,a9,a10,a11,a12,a13,a14
end

f()
------

It crashs.

I guess this patch will fix it .

diff --git a/src/ldo.c b/src/ldo.c
index aafa3dc..a901e6c 100644
--- a/src/ldo.c
+++ b/src/ldo.c
@@ -324,7 +324,7 @@ int luaD_precall (lua_State *L, StkId func, int nresults) {
     case LUA_TLCL: {  /* Lua function: prepare its call */
       StkId base;
       Proto *p = clLvalue(func)->p;
-      luaD_checkstack(L, p->maxstacksize);
+      luaD_checkstack(L, p->maxstacksize + p->numparams);
       func = restorestack(L, funcr);
       n = cast_int(L->top - func) - 1;  /* number of real arguments */
       for (; n < p->numparams; n++)



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