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Bug #1403699: sysbench crash at script_lua.c:860

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Added protection for syntax errors in Lua scripts when code in the
top-level chunk (i.e. not in one of the functions) tries to access the
database driver.
This commit is contained in:
Alexey Kopytov
2014-12-22 14:29:57 +03:00
parent ad5577e8ab
commit f2ae0768bf
1 changed files with 9 additions and 1 deletions
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10
sysbench/scripting/script_lua.c
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@ -1101,10 +1101,18 @@ int sb_lua_rand_str(lua_State *L)
sb_lua_ctxt_t *sb_lua_get_context(lua_State *L)
{
sb_lua_ctxt_t *ctxt;
lua_pushlightuserdata(L, (void *)&sb_lua_ctxt_key);
lua_gettable(L, LUA_REGISTRYINDEX);
return (sb_lua_ctxt_t *)lua_touserdata(L, -1);
ctxt = (sb_lua_ctxt_t *)lua_touserdata(L, -1);
if (ctxt == NULL)
luaL_error(L, "Attempt to access database driver before it is initialized. "
"Check your script for syntax errors");
return ctxt;
}
/* Set a per-state interpreter context */