From a48382399d7682f7e1d10dd5b3f9c91f7c526f7a Mon Sep 17 00:00:00 2001
From: Nathan Bronson <ngbronson@fb.com>
Date: Thu, 17 Dec 2015 12:22:36 -0800
Subject: [PATCH] Fix use-after free in db_bench

Test Plan: valgrind db_bench

Reviewers: igor, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D52101
---
 db/db_bench.cc | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/db/db_bench.cc b/db/db_bench.cc
index a7025ca3e..48918b854 100644
--- a/db/db_bench.cc
+++ b/db/db_bench.cc
@@ -1633,9 +1633,8 @@ class Benchmark {
 #endif
     }
 
-    const char* compression =
-        CompressionTypeToString(FLAGS_compression_type_e).c_str();
-    fprintf(stdout, "Compression: %s\n", compression);
+    auto compression = CompressionTypeToString(FLAGS_compression_type_e);
+    fprintf(stdout, "Compression: %s\n", compression.c_str());
 
     switch (FLAGS_rep_factory) {
       case kPrefixHash:
@@ -1656,7 +1655,7 @@ class Benchmark {
     }
     fprintf(stdout, "Perf Level: %d\n", FLAGS_perf_level);
 
-    PrintWarnings(compression);
+    PrintWarnings(compression.c_str());
     fprintf(stdout, "------------------------------------------------\n");
   }