From: Batuhan Taskaya <batuhan@python.org>
Date: Tue, 8 Jun 2021 17:39:47 +0000 (+0300)
Subject: [3.9] bpo-11105: reduce the recursion limit for tests. (GH-26605)
X-Git-Tag: v3.9.6~37
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=87f502231c6d5b04a4d8aa23fba24fcf5303aebb;p=thirdparty%2FPython%2Fcpython.git

[3.9] bpo-11105: reduce the recursion limit for tests. (GH-26605)

(cherry picked from commit e58d762c1fb4ad5e021d016c80c2bc4513632d2f)

Co-authored-by: Batuhan Taskaya <batuhan@python.org>
---

diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
index aee3737ffc40..229e1ac0a2a2 100644
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -3199,3 +3199,13 @@ def skip_if_broken_multiprocessing_synchronize():
             synchronize.Lock(ctx=None)
         except OSError as exc:
             raise unittest.SkipTest(f"broken multiprocessing SemLock: {exc!r}")
+
+
+@contextlib.contextmanager
+def infinite_recursion(max_depth=75):
+    original_depth = sys.getrecursionlimit()
+    try:
+        sys.setrecursionlimit(max_depth)
+        yield
+    finally:
+        sys.setrecursionlimit(original_depth)
diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
index b229921f5c07..c3e3be633534 100644
--- a/Lib/test/test_ast.py
+++ b/Lib/test/test_ast.py
@@ -1031,7 +1031,8 @@ Module(
         e = ast.UnaryOp(op=ast.Not(), lineno=0, col_offset=0)
         e.operand = e
         with self.assertRaises(RecursionError):
-            compile(ast.Expression(e), "<test>", "eval")
+            with support.infinite_recursion():
+                compile(ast.Expression(e), "<test>", "eval")
 
     def test_recursion_indirect(self):
         e = ast.UnaryOp(op=ast.Not(), lineno=0, col_offset=0)
@@ -1039,7 +1040,8 @@ Module(
         e.operand = f
         f.operand = e
         with self.assertRaises(RecursionError):
-            compile(ast.Expression(e), "<test>", "eval")
+            with support.infinite_recursion():
+                compile(ast.Expression(e), "<test>", "eval")
 
 
 class ASTValidatorTests(unittest.TestCase):