local hook = require "hook"
local co = coroutine.create(function(a)
return a
end)
hook(co)
coroutine.resume(co, 1)
debug.getlocal(co, 0, 1) -- crashes
------
#include <lua.h>
#include <lauxlib.h>
static void
lhook(lua_State *L, lua_Debug *ar) {
lua_yield(L,0);
}
static int
hook(lua_State *L) {
lua_State *L1 = lua_tothread(L, 1);
lua_sethook(L1, lhook, LUA_MASKLINE, 0);
return 0;
}
int
luaopen_hook(lua_State *L) {
lua_pushcfunction(L, hook);
return 1;
}
---------
I guess the reason is : when yield from a hook, the top function in the yielded thread is a lua function, but the L->ci->func is not a valid lua function object. so lua_getlocal (and other debug api) can't work.
