Index: boost/test/impl/execution_monitor.ipp
===================================================================
--- boost/test/impl/execution_monitor.ipp	(Revision 48136)
+++ boost/test/impl/execution_monitor.ipp	(Arbeitskopie)
@@ -57,6 +57,11 @@
 using std::va_list;
 #endif
 
+// to use vsnprintf
+#if defined(__QNXNTO__)
+#  include <stdio.h>
+#endif
+
 #if defined(_WIN32) && !defined(BOOST_DISABLE_WIN32) &&                  \
     (!defined(__COMO__) && !defined(__MWERKS__) && !defined(__GNUC__) || \
      BOOST_WORKAROUND(__MWERKS__, >= 0x3000))
@@ -139,13 +144,14 @@
 #  include <signal.h>
 #  include <setjmp.h>
 
-#  if !defined(__CYGWIN__)
+#  if !defined(__CYGWIN__) && !defined(__QNXNTO__)
 #   define BOOST_TEST_USE_ALT_STACK
 #  endif
 
 #  if defined(SIGPOLL) && !defined(__CYGWIN__) && \
       !(defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)) && \
-      !defined(__NetBSD__)
+      !defined(__NetBSD__) && \
+      !defined(__QNXNTO__)
 #    define BOOST_TEST_CATCH_SIGPOLL
 #  endif