Andrew Morrow: The attached patch updates the lit.config for libc++ unit tests so

that the valgrind configuration passed to lit.py is used to run .pass
tests.

llvm-svn: 161193

libcxx/test/lit.cfg

@@ -83,6 +83,8 @@ class LibcxxTestFormat(lit.formats.FileBasedTest):
                     return lit.Test.FAIL, report
 
                 cmd = [exec_path]
+                if lit_config.useValgrind:
+                    cmd = lit_config.valgrindArgs + cmd
                 out, err, exitCode = self.execute_command(cmd)
                 if exitCode != 0:
                     report = """Compiled With: %s\n""" % ' '.join(["'%s'" % a