[Bug sanitizer/58465] ASan/TSan deadlock in a single-threaded program

[oleg at smolsky dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58465

--- Comment #7 from Oleg Smolsky <oleg at smolsky dot net> ---
Created attachment 30874
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30874&action=edit
full stack

Here is the full stack. It comes from the very same spot in my app.

As for the minimal repro - that's problematic. I extracted the same regex into
a minimal program and it works correctly.

I am guessing there is something about conditional re-entrancy:

    __asan::asan_malloc
    ...
    strerror
    ...
    asan_free
    ...
    std::__debug::vector
    boost::re_detail::basic_char_set