crates/capi/src/traceback.rs (1)

10-13: 💤 Low value

Consider null pointer checks for defensive safety.

While this is an unsafe extern "C" function, dereferencing tb and file without null checks at lines 12-13 will cause undefined behavior if callers pass null. A defensive check could improve robustness:

🛡️ Optional defensive null check

 pub unsafe extern "C" fn PyTraceBack_Print(tb: *mut PyObject, file: *mut PyObject) -> c_int {
+    if tb.is_null() || file.is_null() {
+        return -1;
+    }
     with_vm(|vm| {
         let tb = unsafe { &*tb };
         let file = unsafe { &*file };

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@crates/capi/src/traceback.rs` around lines 10 - 13, The function
PyTraceBack_Print currently dereferences tb and file unsafely; add null-pointer
checks for the incoming raw pointers (tb and file) before the unsafe
dereferences inside PyTraceBack_Print (the locations where it does let tb = &*tb
and let file = &*file) and return an appropriate c_int error value (e.g., -1) if
either is null (and optionally set a Python C-API error), otherwise proceed into
with_vm as before.

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

crates/capi/src/traceback.rs (1)

10-13: 💤 Low value

Consider adding null-pointer guards for defensive safety.

While CPython's C-API generally assumes valid (non-null) pointers and the unsafe marker delegates this responsibility to the caller, dereferencing null pointers would cause undefined behavior. Adding defensive checks would make the function more robust against misuse from C callers.

🛡️ Optional defensive null checks

 pub unsafe extern "C" fn PyTraceBack_Print(tb: *mut PyObject, file: *mut PyObject) -> c_int {
+    if tb.is_null() || file.is_null() {
+        return -1;
+    }
     with_vm(|vm| {
         let tb = unsafe { &*tb };
         let file = unsafe { &*file };

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@crates/capi/src/traceback.rs` around lines 10 - 13, Add defensive
null-pointer guards at the start of PyTraceBack_Print: check if the raw pointers
tb or file are null (e.g., tb.is_null() or file.is_null()) before entering the
unsafe dereference or calling with_vm, and if either is null return an error
code (c_int, e.g., -1) so you avoid undefined behavior from dereferencing;
update the function PyTraceBack_Print to perform these checks and early-return
prior to using &*tb or &*file.