This. Seeing if you can do something before actually doing it falls victim to TO...

colejohnson66 on Sept 24, 2023 | parent | context | favorite | on: What it takes to pass a file path to a Windows API...

This. Seeing if you can do something before actually doing it falls victim to TOCTOU[0] bugs. Until one actually tries to perform the security-sensitive operation, there's no guaranteeing that you will succeed.

[0]: https://en.wikipedia.org/wiki/Time-of-check_to_time-of-use