TestUnitTest++ crashes with clang-3.9 in Release mode #154

*** Error in `./a': free(): invalid pointer: 0x00007fffd28cc5b0 ***
Aborted (core dumped)

#0  0x00007feb9e016c37 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1  0x00007feb9e01a028 in __GI_abort () at abort.c:89
#2  0x00007feb9e0532a4 in __libc_message (do_abort=do_abort@entry=1,
    fmt=fmt@entry=0x7feb9e164ef0 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
#3  0x00007feb9e05f56e in malloc_printerr (ptr=<optimized out>, str=0x7feb9e161041 "free(): invalid pointer", action=1)
    at malloc.c:4996
#4  _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3840
#5  0x000000000048561c in void UnitTest::ExecuteTest<UnitTest::Test>(UnitTest::Test&, UnitTest::TestDetails const&, bool) ()
#6  0x0000000000463874 in (anonymous namespace)::TestCrashingTestsAreReportedAsFailures::RunImpl() const ()
#7  0x000000000048561c in void UnitTest::ExecuteTest<UnitTest::Test>(UnitTest::Test&, UnitTest::TestDetails const&, bool) ()
#8  0x0000000000485c42 in UnitTest::TestRunner::RunTest(UnitTest::TestResults*, UnitTest::Test*, int) const ()
#9  0x00000000004859bd in UnitTest::RunAllTests() ()
#10 0x00007feb9e001f45 in __libc_start_main (main=0x40d1e0 <main>, argc=1, argv=0x7fffdfe0fe68, init=<optimized out>,
    fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffdfe0fe58) at libc-start.c:287
#11 0x000000000040d109 in _start ()