这段lua在5.1里为什么会core？

linux_c_py_php

1. #include "lua.h"
   
2. #include "lualib.h"
   
3. #include "lauxlib.h"
   
4. 
   
5. int n = 0;
   
6. 
   
7. int func(lua_State *L) {
   
8.     printf("func_top=%d top=%s\n", lua_gettop(L), lua_tostring(L, -1));
   
9.     if (!n) {
   
10.         ++ n;
    
11.         return lua_yield(L, 1);
    
12.     } else {
    
13.         return 1;
    
14.     }
    
15. }
    
16. 
    
17. int main(int argc, char* const argv[]) {
    
18.     lua_State *L = luaL_newstate();
    
19. 
    
20.     /* init lua library */   
    
21.     lua_pushcfunction(L, luaopen_base);
    
22.     if (lua_pcall(L, 0, 0, 0) != 0) {
    
23.         return 1;
    
24.     }
    
25.     lua_pushcfunction(L, luaopen_package);
    
26.     if (lua_pcall(L, 0, 0, 0 ) != 0) {
    
27.         return 2;
    
28.     }
    
29.    
    
30.     /* create the coroutine */
    
31.     lua_State *LL = lua_newthread(L);
    
32. 
    
33.     lua_pushcfunction(LL, func);
    
34.     lua_pushstring(LL, "hello world");
    
35.    
    
36.     /* first time resume */
    
37.     if (lua_resume(LL, 1) == LUA_YIELD) {
    
38.         printf("first_top=%d top_string=%s\n", lua_gettop(LL), lua_tostring(LL, -1));
    
39.         /* twice resume */
    
40.         if (lua_resume(LL, 1) == 0) {
    
41.             printf("second_top=%d top_string=%s\n", lua_gettop(LL), lua_tostring(LL, -1));
    
42.         }
    
43.     }
    
44. 
    
45.     lua_close(L);
    
46. 
    
47.     return 0;
    
48. }

复制代码

func_top=1 top=hello world
first_top=1 top_string=hello world
Segmentation fault (core dumped)

#0  0x000000000040e1d5 in luaV_execute ()
(gdb) bt
#0  0x000000000040e1d5 in luaV_execute ()
#1  0x00000000004059ae in luaD_rawrunprotected ()
#2  0x000000000040666c in lua_resume ()
#3  0x0000000000402bbc in main ()

linux_c_py_php

在网上找到类似问题,

http://lua-users.org/lists/lua-l/2010-04/msg00401.html

应该是说5.1不支持lua_resume一个c函数, 怨不着在5.2里可以了.

是这样吗?