luaL_getn segfault
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- Subject: luaL_getn segfault
- From: Tuomo Valkonen <tuomov@...>
- Date: 2003年7月29日 18:33:37 +0300
The following piece of code causes Lua to crash in luaH_getstr on my
system (using the Debian Lua packages):
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
static lua_State *l_st;
int main(void)
{
l_st=lua_open();
if(l_st==NULL)
return 0;
lua_rawgeti(l_st, LUA_REGISTRYINDEX, LUA_NOREF);
luaL_getn(l_st, -1);
lua_close(l_st);
}
(I use LUA_NOREF to pass around empty/unset tables in Ion without caring
to check for it in the higher-level routines.)
GDB backtrace:
#0 0x4003701d in luaH_getstr () from /usr/lib/liblua50.so.5.0
#1 0x400370e7 in luaH_get () from /usr/lib/liblua50.so.5.0
#2 0x40027763 in lua_rawget () from /usr/lib/liblua50.so.5.0
#3 0x40043017 in luaL_getn () from /usr/lib/liblualib50.so.5.0
#4 0x0804855c in main ()
#5 0x40066a51 in __libc_start_main () from /lib/libc.so.6
--
Tuomo