lib/compiler/test_runner.zig | 16 +++++---
 lib/std/Io/Dir.zig           |  1 +
 lib/std/Io/Threaded.zig      | 63 ++++++++++++++++++++++++++++++++
 lib/std/c.zig                | 15 ++++++++
 lib/std/fs/test.zig          |  4 +-
 lib/std/posix/test.zig       |  9 +++--
 6 files changed, 97 insertions(+), 11 deletions(-)