[mlir][python] disable nanobind leak warnings

[makslevental]

See #119924 (comment)

[llvmbot]

@llvm/pr-subscribers-mlir

Author: Maksim Levental (makslevental)

Changes

See #119924 (comment)

---

Full diff: https://github.com/llvm/llvm-project/pull/121099.diff

1 Files Affected:

• (modified) mlir/lib/Bindings/Python/IRCore.cpp (+2)

diff --git a/mlir/lib/Bindings/Python/IRCore.cpp b/mlir/lib/Bindings/Python/IRCore.cpp
index 86afa956398ae5..05c000bfd8ca0a 100644
--- a/mlir/lib/Bindings/Python/IRCore.cpp
+++ b/mlir/lib/Bindings/Python/IRCore.cpp
@@ -2587,6 +2587,8 @@ class PyOpAttributeMap {
 //------------------------------------------------------------------------------
 
 void mlir::python::populateIRCore(nb::module_ &m) {
+  // disable leak warnings which tend to be false positives.
+  nb::set_leak_warnings(false);
   //----------------------------------------------------------------------------
   // Enums.
   //----------------------------------------------------------------------------

[hawkinsp]

I agree with doing this. I've also found nanobind's leak checker to have false positives and have long disabled it in my projects: I don't even think CPython is guaranteed to call the destructor of every object on process shutdown.