From 5866fbb2b2574c1fc4b1e9e71523ad9147b6a471 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@pdimov.com>
Date: Sun, 21 Jan 2018 17:38:01 +0200
Subject: [PATCH] Do not test boost::throws() under -fsanitize=undefined

---
 .travis.yml              |  2 +-
 test/error_code_test.cpp | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index d9143d3..e079cfc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -264,7 +264,7 @@ install:
 script:
   - |-
     echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
-  - ./b2 -j3 libs/system/test toolset=$TOOLSET cxxstd=$CXXSTD ${UBSAN:+cxxflags=-fsanitize=undefined} ${UBSAN:+cxxflags=-fno-sanitize-recover=undefined} ${UBSAN:+linkflags=-fsanitize=undefined}
+  - ./b2 -j3 libs/system/test toolset=$TOOLSET cxxstd=$CXXSTD ${UBSAN:+cxxflags=-fsanitize=undefined} ${UBSAN:+cxxflags=-fno-sanitize-recover=undefined} ${UBSAN:+linkflags=-fsanitize=undefined} ${UBSAN:+define=UBSAN=1}
 
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diff --git a/test/error_code_test.cpp b/test/error_code_test.cpp
index 7965541..1f96c59 100644
--- a/test/error_code_test.cpp
+++ b/test/error_code_test.cpp
@@ -22,6 +22,7 @@
 #include <cstring>
 #include <functional>
 #include <boost/cerrno.hpp>
+#include <boost/config/pragma_message.hpp>
 
 //  Although using directives are not the best programming practice, testing
 //  with a boost::system using directive increases use scenario coverage.
@@ -246,8 +247,17 @@ int main( int, char ** )
   BOOST_TEST( econd.message() != "" );
   BOOST_TEST( econd.message().substr( 0, 13) != "Unknown error" );
 
+#if !defined(UBSAN)
+
+  // the current implementation of boost::throws() relies on undefined behavior
   test_throws_usage();
 
+#else
+
+  BOOST_PRAGMA_MESSAGE("Skipping test_throws_usage() due to UBSAN");
+
+#endif
+
 #ifdef BOOST_WINDOWS_API
   std::cout << "Windows tests...\n";
   // these tests probe the Windows errc decoder