From 4420cb49da5d291c5a438ead6daebbf26b6f32b9 Mon Sep 17 00:00:00 2001
From: Jacquin Mininger <jacquin.mininger@gmail.com>
Date: Tue, 22 May 2018 13:34:26 -0700
Subject: [PATCH] Fix Issue #3771: Slice ctor checks for nullptr and creates
 empty string

Summary:
Fix Issue #3771   : Check for nullptr in Slice constructor
Slice ctor checks for nullptr and creates empty string if the string does not exist
Closes https://github.com/facebook/rocksdb/pull/3887

Differential Revision: D8098852

Pulled By: ajkr

fbshipit-source-id: 04471077defa9776ce7b8c389a61312ce31002fb
---
 include/rocksdb/slice.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/rocksdb/slice.h b/include/rocksdb/slice.h
index 76ecce684..e6d8dfc60 100644
--- a/include/rocksdb/slice.h
+++ b/include/rocksdb/slice.h
@@ -43,7 +43,9 @@ class Slice {
 
   // Create a slice that refers to s[0,strlen(s)-1]
   /* implicit */
-  Slice(const char* s) : data_(s), size_(strlen(s)) { }
+  Slice(const char* s) : data_(s) {
+    size_ = (s == nullptr) ? 0 : strlen(s);
+  }
 
   // Create a single slice from SliceParts using buf as storage.
   // buf must exist as long as the returned Slice exists.