From 5810472278e75f70a1c9e930280dc7111fa66a0c Mon Sep 17 00:00:00 2001
From: Christopher Dykes <cdykes@fb.com>
Date: Fri, 19 May 2017 16:42:25 -0700
Subject: [PATCH] Fix the header being included when trying to specialize
 std::hash

Summary: `std::hash` lives in `<functional>`, not `<xstddef>`.

Reviewed By: yfeldblum

Differential Revision: D5097468

fbshipit-source-id: d0684491d1d4b0f83f07ad837a66a915ce2ec8a6
---
 folly/portability/PThread.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/folly/portability/PThread.h b/folly/portability/PThread.h
index e6324581..8b2f3051 100755
--- a/folly/portability/PThread.h
+++ b/folly/portability/PThread.h
@@ -112,7 +112,7 @@ inline int pthread_attr_getguardsize(
   return 0;
 }
 
-#include <xstddef>
+#include <functional>
 namespace std {
 template <>
 struct hash<pthread_t> {
-- 
2.34.1