gcc/ChangeLog:
2015-01-21  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * gimplify.c (gimplify_function_tree): Check the no_sanitize_thread
        decl attribute.

gcc/testsuite/ChangeLog
2015-01-21  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * gcc/testsuite/c-c++-common/tsan/step.c: New testcase.

From-SVN: r219961