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bug: attempting to resume the running coroutine makes it unyieldable

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Roberto Ierusalimschy 2013-11-08 16:16:33 -02:00
parent ab5fa213b3
commit 7a8eb83b4a
1 changed files with 3 additions and 2 deletions
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5
ldo.c
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@ -1,5 +1,5 @@
/*
** $Id: ldo.c,v 2.110 2013/08/27 18:53:35 roberto Exp roberto $
** $Id: ldo.c,v 2.111 2013/09/17 15:40:06 roberto Exp roberto $
** Stack and Call structure of Lua
** See Copyright Notice in lua.h
*/
@ -538,6 +538,7 @@ static void resume (lua_State *L, void *ud) {
LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs) {
int status;
int oldnny = L->nny; /* save 'nny' */
lua_lock(L);
luai_userstateresume(L, nargs);
L->nCcalls = (from) ? from->nCcalls + 1 : 1;
@ -559,7 +560,7 @@ LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs) {
}
lua_assert(status == L->status);
}
L->nny = 1; /* do not allow yields */
L->nny = oldnny; /* restore 'nny' */
L->nCcalls--;
lua_assert(L->nCcalls == ((from) ? from->nCcalls : 0));
lua_unlock(L);