From a5741100482eb50bb00ac0f8d22198277cd41fa5 Mon Sep 17 00:00:00 2001
From: Alastair Murray <alastair.murray@codeplay.com>
Date: Tue, 9 Feb 2016 13:08:56 +0000
Subject: [PATCH] Close a memory leak in configuration code

This was causing configuration failures on address sanitizer builds.
---
 cmake/posix_regex.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cmake/posix_regex.cpp b/cmake/posix_regex.cpp
index a31af804..466dc625 100644
--- a/cmake/posix_regex.cpp
+++ b/cmake/posix_regex.cpp
@@ -7,6 +7,8 @@ int main() {
   if (ec != 0) {
     return ec;
   }
-  return regexec(&re, str.c_str(), 0, nullptr, 0) ? -1 : 0;
+  int ret = regexec(&re, str.c_str(), 0, nullptr, 0) ? -1 : 0;
+  regfree(&re);
+  return ret;
 }