[Issue 16352] dead-lock in std.allocator.free_list unittest

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16352

--- Comment #4 from John Colvin <john.loughran.colvin at gmail.com> ---
To reproduce on linux x86_64:

% ../dmd/src/dmd -conf= -I../druntime/import  -w -dip25 -m64  -O -release -main
-unittest generated/linux/release/64/libphobos2.a -defaultlib= -debuglib=
-L-ldl std/experimental/allocator/building_blocks/free_list.d
% seq 10000 | xargs -Iz ./free_list

--