Ivan FB 24a56032af
Fix Rust callbacks dereference msg without a null check (rust.nim:272, 317). CStr::from_ptr(msg) is UB if msg == nullptr. The C++ side guards with msg ? ... : "". The Nim side
appears to always pass a non-null pointer, but soundness across an FFI boundary shouldn't hinge on a producer's discipline — the Rust receiver should null-check. Especially
  since the C ABI signature here is the one downstream consumers will rely on indefinitely.
2026-05-11 09:40:33 +02:00
..