From c4b44869daab09da2f559e88c5efb137a65b3dbf Mon Sep 17 00:00:00 2001
From: Louis Dionne <ldionne@apple.com>
Date: Tue, 25 Sep 2018 04:13:08 +0000
Subject: [PATCH] Revert r342936 "Remove redundant null pointer check in
 operator delete"

A review for the change was opened in https://reviews.llvm.org/D52401
but the change was committed before being approved by any of the code
owners for libc++.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@342938 91177308-0d34-0410-b5e6-96231b3b80d8
---
 src/new.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/new.cpp b/src/new.cpp
index 35f481db0..8013d89ae 100644
--- a/src/new.cpp
+++ b/src/new.cpp
@@ -135,7 +135,8 @@ _LIBCPP_WEAK
 void
 operator delete(void* ptr) _NOEXCEPT
 {
-    ::free(ptr);
+    if (ptr)
+        ::free(ptr);
 }
 
 _LIBCPP_WEAK
@@ -256,10 +257,11 @@ _LIBCPP_WEAK
 void
 operator delete(void* ptr, std::align_val_t) _NOEXCEPT
 {
+    if (ptr)
 #if defined(_LIBCPP_MSVCRT_LIKE)
-    ::_aligned_free(ptr);
+        ::_aligned_free(ptr);
 #else
-    ::free(ptr);
+        ::free(ptr);
 #endif
 }