From 6b09b73e1777337b6ef04e1c6dbd2c6d365fc51d Mon Sep 17 00:00:00 2001
From: Zeng Jinle <32832641+sneaxiy@users.noreply.github.com>
Date: Fri, 29 Nov 2019 10:13:31 +0800
Subject: [PATCH] add explicit conversion to NoNeedBufferVarsFunctor,
 test=develop (#21430)

---
 paddle/fluid/framework/no_need_buffer_vars_inference.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/paddle/fluid/framework/no_need_buffer_vars_inference.h b/paddle/fluid/framework/no_need_buffer_vars_inference.h
index 9124489ec6..c1640f6ccb 100644
--- a/paddle/fluid/framework/no_need_buffer_vars_inference.h
+++ b/paddle/fluid/framework/no_need_buffer_vars_inference.h
@@ -114,7 +114,7 @@ class InferNoNeedBufferVarsFN {
     return (*inferer_)(ctx);
   }
 
-  inline operator bool() const { return inferer_ != nullptr; }
+  inline explicit operator bool() const { return inferer_ != nullptr; }
 
   inline bool operator!() const { return inferer_ == nullptr; }
 
-- 
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