fix error handling

1 files changed, 3 insertions, 1 deletions

diff --git a/lua.go b/lua.go
index b6d7027..11eec3e 100644
--- a/lua.go
+++ b/lua.go
@@ -293,12 +293,14 @@ func (l *Lua) GetGlobal(name string) {
 }
 
 func (l *Lua) NewThread(yield func(), resume func() bool) *Lua {
-	return &Lua{
+	newl := &Lua{
 		l: C.lua_newthread(l.l),
 		running: l.running,
 		resume: resume,
 		yield: yield,
 	}
+	newl.PushGoFunction(TracebackHandler)
+	return newl
 }
 
 // TracebackHandler handles stack trace formatting on errors.