[Bug sanitizer/59302] tsan: Unexpected mmap in InternalAllocator!

[kcc at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59302

--- Comment #1 from Kostya Serebryany <kcc at gcc dot gnu.org> ---
This isn't expected to happen and so we did not write a better warning message.
We may be able to fix it, but the underlying problem is in your tests: 
it has a race that tsan is trying to report and which is suppressed
(probably because a similar races was reported before).

How many race reports do you see before tsan crashes? 
Did you suppress any of those?