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fix[next]: Fix nanobind segfault #2431

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fix[next]: Fix nanobind segfault #2431

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726dadf
Fix nanobind segfault
tehrengruber Jan 10, 2026
39e9c37
Cleanup
tehrengruber Jan 10, 2026
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13 changes: 9 additions & 4 deletions src/gt4py/next/otf/compilation/compiler.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@

import dataclasses
import pathlib
import types
from typing import Protocol, TypeVar

import factory
Expand Down Expand Up @@ -42,6 +43,9 @@ def __call__(
) -> stages.BuildSystemProject[SrcL, LS, TgtL]: ...


_MODULES: list[types.ModuleType] = []


@dataclasses.dataclass(frozen=True)
class Compiler(
workflow.ChainableWorkflowMixin[
Expand Down Expand Up @@ -83,11 +87,12 @@ def __call__(
f"On-the-fly compilation unsuccessful for '{inp.program_source.entry_point.name}'."
)

compiled_prog = getattr(
importer.import_from_path(src_dir / new_data.module), new_data.entry_point_name
)
m = importer.import_from_path(src_dir / new_data.module)
# Keep a reference to the module so they are not garbage collected. This avoids a SEGFAULT
# in nanobind when calling the compiled program.
_MODULES.append(m)

return compiled_prog
return getattr(m, new_data.entry_point_name)


class CompilerFactory(factory.Factory):
Expand Down