From 8fe13da3a5e0bbacbfb238b48c2ced5337b1b5f6 Mon Sep 17 00:00:00 2001
From: Alexander Haase <alexander.haase@rwth-aachen.de>
Date: Fri, 13 May 2016 14:59:30 +0200
Subject: [PATCH] Added asan-wrapper.

In some special cases static linking the sanitizers won't work, and you have to
preload libasan. To find the right libasan depending on the application to be
executed, a wrapper script was added. The location of the wrapper script can be
accessed via ASan_WRAPPER variable.
---
 cmake/FindASan.cmake |  3 +++
 cmake/asan-wrapper   | 55 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100755 cmake/asan-wrapper

diff --git a/cmake/FindASan.cmake b/cmake/FindASan.cmake
index 734a960..fcebb43 100644
--- a/cmake/FindASan.cmake
+++ b/cmake/FindASan.cmake
@@ -45,6 +45,9 @@ include(sanitize-helpers)
 if (SANITIZE_ADDRESS)
     sanitizer_check_compiler_flags("${FLAG_CANDIDATES}" "AddressSanitizer"
         "ASan")
+
+    find_program(ASan_WRAPPER "asan-wrapper" PATHS ${CMAKE_MODULE_PATH})
+	mark_as_advanced(ASan_WRAPPER)
 endif ()
 
 function (add_sanitize_address TARGET)
diff --git a/cmake/asan-wrapper b/cmake/asan-wrapper
new file mode 100755
index 0000000..5d54103
--- /dev/null
+++ b/cmake/asan-wrapper
@@ -0,0 +1,55 @@
+#!/bin/sh
+
+# The MIT License (MIT)
+#
+# Copyright (c)
+#   2013 Matthew Arsenault
+#   2015-2016 RWTH Aachen University, Federal Republic of Germany
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+# This script is a wrapper for AddressSanitizer. In some special cases you need
+# to preload AddressSanitizer to avoid error messages - e.g. if you're
+# preloading another library to your application. At the moment this script will
+# only do something, if we're running on a Linux platform. OSX might not be
+# affected.
+
+
+# Exit immediately, if platform is not Linux.
+if [ "$(uname)" != "Linux" ]
+then
+    exec $@
+fi
+
+
+# Get the used libasan of the application ($1). If a libasan was found, it will
+# be prepended to LD_PRELOAD.
+libasan=$(ldd $1 | grep libasan | sed "s/^[[:space:]]//" | cut -d' ' -f1)
+if [ -n "$libasan" ]
+then
+    if [ -n "$LD_PRELOAD" ]
+    then
+        export LD_PRELOAD="$libasan:$LD_PRELOAD"
+    else
+        export LD_PRELOAD="$libasan"
+    fi
+fi
+
+# Execute the application.
+exec $@