[libc] Allow openat and creat to return fd 0.#166466

Merged

jtstogel merged 2 commits intollvm:mainfrom

jtstogel:fix-openat

Nov 5, 2025

Commits on Nov 4, 2025

Allow openat to return fd 0.
jtstogel
committed

Commits on Nov 5, 2025

Also allow creat to return a zero file descriptor.
jtstogel
committed