From e6c44bdbdd176c242da8bffade713f4a67418642 Mon Sep 17 00:00:00 2001
From: Qi Xiao <xiaqqaix@gmail.com>
Date: Mon, 22 Feb 2016 23:00:33 +0100
Subject: [PATCH] Terminate the stub before -exec.

---
 eval/builtin_func.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/eval/builtin_func.go b/eval/builtin_func.go
index 69a67a39..14096e5a 100644
--- a/eval/builtin_func.go
+++ b/eval/builtin_func.go
@@ -673,6 +673,9 @@ func _exec(ec *EvalCtx, args ...string) {
 	if err != nil {
 		fmt.Fprintln(os.Stderr, err)
 	}
+	if ec.Stub != nil {
+		ec.Stub.Terminate()
+	}
 	err = syscall.Exec(args[0], args, os.Environ())
 	maybeThrow(err)
 }