rusefi
/
lua
mirror of https://github.com/rusefi/lua.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

bug: debug.sethook/gethook may overflow thread's stack

This commit is contained in:
Roberto Ierusalimschy 2008-01-21 11:37:08 -02:00
parent e7c989baf1
commit 74897bc52f
1 changed files with 10 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
ldblib.c
View File

@ -1,5 +1,5 @@
/*
** $Id: ldblib.c,v 1.107 2007/06/22 15:33:54 roberto Exp roberto $
** $Id: ldblib.c,v 1.108 2008/01/18 17:14:47 roberto Exp roberto $
** Interface from Lua to its debug API
** See Copyright Notice in lua.h
*/
@ -268,13 +268,12 @@ static int db_sethook (lua_State *L) {
count = luaL_optint(L, arg+3, 0);
func = hookf; mask = makemask(smask, count);
}
gethooktable(L1);
lua_pushlightuserdata(L1, L1);
gethooktable(L);
lua_pushlightuserdata(L, L1);
lua_pushvalue(L, arg+1);
lua_xmove(L, L1, 1);
lua_rawset(L1, -3); /* set new hook */
lua_pop(L1, 1); /* remove hook table */
lua_sethook(L1, func, mask, count);
lua_rawset(L, -3); /* set new hook */
lua_pop(L, 1); /* remove hook table */
lua_sethook(L1, func, mask, count); /* set hooks */
return 0;
}
@ -288,11 +287,10 @@ static int db_gethook (lua_State *L) {
if (hook != NULL && hook != hookf) /* external hook? */
lua_pushliteral(L, "external hook");
else {
gethooktable(L1);
lua_pushlightuserdata(L1, L1);
lua_rawget(L1, -2); /* get hook */
lua_remove(L1, -2); /* remove hook table */
lua_xmove(L1, L, 1);
gethooktable(L);
lua_pushlightuserdata(L, L1);
lua_rawget(L, -2); /* get hook */
lua_remove(L, -2); /* remove hook table */
}
lua_pushstring(L, unmakemask(mask, buff));
lua_pushinteger(L, lua_gethookcount(L1));