Merge pull request #19205 from bfredl/luaerr

fix(lua): don't leak memory on error
This commit is contained in:
bfredl 2022-07-02 23:44:26 +02:00 committed by GitHub
commit c6c89391b7
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@ -300,7 +300,9 @@ int nlua_regex(lua_State *lstate)
});
if (ERROR_SET(&err)) {
return luaL_error(lstate, "couldn't parse regex: %s", err.msg);
nlua_push_errstr(lstate, "couldn't parse regex: %s", err.msg);
api_clear_error(&err);
return lua_error(lstate);
}
assert(prog);
@ -338,12 +340,14 @@ static dict_T *nlua_get_var_scope(lua_State *lstate)
dict = tabpage->tp_vars;
}
} else {
luaL_error(lstate, "invalid scope", err.msg);
luaL_error(lstate, "invalid scope");
return NULL;
}
if (ERROR_SET(&err)) {
luaL_error(lstate, "FAIL: %s", err.msg);
nlua_push_errstr(lstate, "scoped variable: %s", err.msg);
api_clear_error(&err);
lua_error(lstate);
return NULL;
}
return dict;
@ -537,3 +541,14 @@ void nlua_state_add_stdlib(lua_State *const lstate, bool is_thread)
lua_cjson_new(lstate);
lua_setfield(lstate, -2, "json");
}
/// like luaL_error, but allow cleanup
void nlua_push_errstr(lua_State *L, const char *fmt, ...)
{
va_list argp;
va_start(argp, fmt);
luaL_where(L, 1);
lua_pushvfstring(L, fmt, argp);
va_end(argp);
lua_concat(L, 2);
}