Dropped writes resulting in corrupted files #45
Description
In my project, I have recently started noticing deserialization errors resulting from truncated files. I had assumed that POSIX guarantees strong consistency to avoid this. But I decided to double check with a unit test. I discovered that async_fs fails this test quite often, while the equivalent test of std::fs has never failed.
Here is the test code so you may confirm my findings. I'm finding it's much easier to reproduce the test failure in a debug build (without --release).