diff options
| -rw-r--r-- | util/async.lua | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/util/async.lua b/util/async.lua index c81f8639..d0bc6c3d 100644 --- a/util/async.lua +++ b/util/async.lua @@ -37,6 +37,8 @@ local function waiter(num) num = num - 1; if num == 0 and waiting then runner_continue(thread); + elseif num < 0 then + error("done() called too many times"); end end; end |