From 57fd36c3221e96dd82061d9f3325fd383d7a8027 Mon Sep 17 00:00:00 2001
From: Nathan Phillips <nathan.phillips@diffblue.com>
Date: Wed, 22 Mar 2017 13:56:36 +0000
Subject: [PATCH] Prevent recursion into . and .. folders on Alpine Linux

---
 src/util/file_util.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/util/file_util.cpp b/src/util/file_util.cpp
index 0a62549316e..50dc06473f4 100644
--- a/src/util/file_util.cpp
+++ b/src/util/file_util.cpp
@@ -30,6 +30,8 @@ Date: January 2012
 #define chdir _chdir
 #define popen _popen
 #define pclose _pclose
+#else
+#include <cstring>
 #endif
 
 #include "file_util.h"
@@ -119,6 +121,9 @@ void delete_directory(const std::string &path)
     struct dirent *ent;
     while((ent=readdir(dir))!=NULL)
     {
+      // Needed for Alpine Linux
+      if(strcmp(ent->d_name, ".")==0 || strcmp(ent->d_name, "..")==0)
+        continue;
       std::string sub_path=path+"/"+ent->d_name;
       if(ent->d_type==DT_DIR)
         delete_directory(sub_path);