Wrap visitor recursion errors in PluginExecutionFailed

bugbear.py

@@ -26,6 +26,7 @@
 
 import attr  # type: ignore
 import pycodestyle  # type: ignore
+from flake8.exceptions import PluginExecutionFailed
 
 __version__ = "25.11.29"
 
@@ -106,7 +107,10 @@ def run(self) -> Iterable[tuple[int, int, str, type]]:
             b008_b039_extend_immutable_calls=b008_b039_extend_immutable_calls,
             b902_classmethod_decorators=b902_classmethod_decorators,
         )
-        visitor.visit(self.tree)
+        try:
+            visitor.visit(self.tree)
+        except RecursionError as exc:
+            raise PluginExecutionFailed(self.filename, self.name, exc) from exc
         for e in itertools.chain(visitor.errors, self.gen_line_based_checks()):
             if self.should_warn(e.message[:4]):
                 yield self.adapt_error(e)

tests/test_bugbear.py

@@ -13,6 +13,7 @@
 from pathlib import Path
 
 import pytest
+from flake8.exceptions import PluginExecutionFailed
 
 from bugbear import (
     BugBearChecker,
@@ -235,6 +236,18 @@ def test_b9_flake8_next_default_options(self):
         errors = list(bbc.run())
         self.assertEqual(errors, [])
 
+    def test_recursion_error_is_wrapped(self):
+        from unittest.mock import patch
+
+        bbc = BugBearChecker(filename=str(EVAL_FILES_DIR / "b001.py"))
+        with patch.object(BugBearVisitor, "visit", side_effect=RecursionError("boom")):
+            with self.assertRaises(PluginExecutionFailed) as excinfo:
+                list(bbc.run())
+
+        self.assertEqual(excinfo.exception.filename, str(EVAL_FILES_DIR / "b001.py"))
+        self.assertEqual(excinfo.exception.plugin_name, "flake8-bugbear")
+        self.assertIsInstance(excinfo.exception.original_exception, RecursionError)
+
     def test_selfclean_bugbear(self):
         filename = Path(__file__).absolute().parent.parent / "bugbear.py"
         proc = subprocess.run(