From fdaf2670da2243cbb57a1bf0ed9df6ee72b75990 Mon Sep 17 00:00:00 2001
From: mrambacher <mrambach@gmail.com>
Date: Tue, 14 Feb 2023 17:47:55 -0500
Subject: [PATCH] Add back accidental revert in DropRandomUnsyncedData

Code was accidentally dropped during recent PR
---
 utilities/fault_injection_fs.cc | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/utilities/fault_injection_fs.cc b/utilities/fault_injection_fs.cc
index 2bd2384060..343b68bec6 100644
--- a/utilities/fault_injection_fs.cc
+++ b/utilities/fault_injection_fs.cc
@@ -83,9 +83,11 @@ IOStatus FSFileState::DropUnsyncedData() {
 }
 
 IOStatus FSFileState::DropRandomUnsyncedData(Random* rand) {
-  int range = static_cast<int>(buffer_.size());
-  size_t truncated_size = static_cast<size_t>(rand->Uniform(range));
-  buffer_.resize(truncated_size);
+  const int range = static_cast<int>(buffer_.size());
+  if (range > 0) {
+    size_t truncated_size = static_cast<size_t>(rand->Uniform(range));
+    buffer_.resize(truncated_size);
+  }
   return IOStatus::OK();
 }