From 4b9bd499eb857a345e63079015bc6a34c4fcf98a Mon Sep 17 00:00:00 2001
From: Felipe Zimmerle <fcosta@trustwave.com>
Date: Mon, 21 Aug 2017 22:39:26 -0300
Subject: [PATCH] Fix to_hex_if_need function on string utils

This fix issue #1535. Solution was the same suggested on #1523.
---
 src/utils/string.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/utils/string.cc b/src/utils/string.cc
index 5b83ad22..f0009396 100644
--- a/src/utils/string.cc
+++ b/src/utils/string.cc
@@ -136,7 +136,7 @@ std::string toHexIfNeeded(const std::string &str) {
     std::stringstream res;
 
     for (int i = 0; i < str.size(); i++) {
-        int c = str.at(i);
+        int c = (unsigned char)str.at(i);
         if (c < 32 || c > 126) {
             res << "\\x" << std::setw(2) << std::setfill('0') << std::hex << c;
         } else {