From 75283ccdb3183a6461281959ce372d258568cec3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jerry=20Lundstr=C3=B6m?= <lundstrom.jerry@gmail.com>
Date: Wed, 16 Aug 2023 11:30:36 +0200
Subject: [PATCH] Doc

- `README`: Mention PowerTools for libpcap-devel
- `RefCountString`: Use anonymous array for `data`
---
 README.md            | 2 +-
 src/refcountstring.h | 6 ++----
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 0de7f5f..a8c29e5 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ To install the dependencies under Debian/Ubuntu:
 apt-get install -y zlib1g-dev libmaxminddb-dev
 ```
 
-To install the dependencies under CentOS (with EPEL enabled):
+To install the dependencies under CentOS (with EPEL/PowerTools enabled):
 ```
 yum install -y zlib-devel libmaxminddb-devel
 ```
diff --git a/src/refcountstring.h b/src/refcountstring.h
index 2a80024..193385e 100644
--- a/src/refcountstring.h
+++ b/src/refcountstring.h
@@ -33,7 +33,7 @@
 struct RefCountString {
     // data
     int  count;
-    char data[sizeof(int)]; // this is a dummy, actual array will be larger
+    char data[];
 
     // implementation
     void inc_refcount()
@@ -50,9 +50,7 @@ struct RefCountString {
 
     static RefCountString* allocate(int data_length)
     {
-        std::size_t size = sizeof(RefCountString) - sizeof(char[sizeof(int)]) + data_length * sizeof(char);
-
-        void* chunk = std::calloc(1, size);
+        void* chunk = std::calloc(1, sizeof(RefCountString) + data_length);
         if (!chunk)
             throw std::bad_alloc();