
With gcc 15 we end up emitting a reference to the
std::__glibcxx_assert_fail function because of this change:
361d230fd7
combined with assertion checks in the std::atomic implementation.
This reference is undefined with dfsan causing the test to fail. Fix it
by defining the macro that disables assertions.
Pull Request: https://github.com/llvm/llvm-project/pull/153873