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fix(nim-bindings): fix ABI mismatch in destroy_* FFI functions and add defer-based cleanup

Nim's C backend silently transforms large struct parameters (>16 bytes) into
pointer parameters when calling importc functions. The destroy_* functions were
declared taking T by value in Rust, but Nim always passed &T — causing Rust to
read garbage from the stack on x86-64 (SIGILL on CI) while accidentally working
on ARM64 macOS due to that ABI coincidentally also using pointers for large structs.

Fix by changing all destroy_* functions to take &mut T and using drop_in_place,
which is the correct idiom for dropping a value through a pointer.

On the Nim side, replace scattered manual destroy calls with defer, which
guarantees cleanup on all exit paths and prevents use-after-destroy bugs.

2026-02-25 20:03:09 +01:00

.cargo

Rust -> Nim ABI (#62 )

2026-02-24 15:28:02 -08:00

.github/workflows

ci: add nim-bindings-test

2026-02-25 12:19:32 +01:00

conversations

fix(nim-bindings): fix ABI mismatch in destroy_* FFI functions and add defer-based cleanup

2026-02-25 20:03:09 +01:00

crypto

Key types (#56 )