From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Date: Sat, 22 Nov 2025 09:38:52 +0000 (+0100)
Subject: [3.14] gh-141612: improve `test_trampoline_works_with_forks` coverage (GH-141613... 
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=43d8b7f1ac419de06fdcd7b12455e28a17303770;p=thirdparty%2FPython%2Fcpython.git

[3.14] gh-141612: improve `test_trampoline_works_with_forks` coverage (GH-141613) (#141824)

gh-141612: improve `test_trampoline_works_with_forks` coverage (GH-141613)
(cherry picked from commit f15f6d0ba3715c67643e58959459b0e84a67b183)

Co-authored-by: Paresh Joshi <rahulj9223@gmail.com>
---

diff --git a/Lib/test/test_perf_profiler.py b/Lib/test/test_perf_profiler.py
index 9f2e5899334d..1e1b0522787f 100644
--- a/Lib/test/test_perf_profiler.py
+++ b/Lib/test/test_perf_profiler.py
@@ -160,6 +160,16 @@ class TestPerfTrampoline(unittest.TestCase):
         self.assertIn(f"py::bar_fork:{script}", child_perf_file_contents)
         self.assertIn(f"py::baz_fork:{script}", child_perf_file_contents)
 
+        # The parent's map should not contain the child's symbols.
+        self.assertNotIn(f"py::foo_fork:{script}", perf_file_contents)
+        self.assertNotIn(f"py::bar_fork:{script}", perf_file_contents)
+        self.assertNotIn(f"py::baz_fork:{script}", perf_file_contents)
+
+        # The child's map should not contain the parent's symbols.
+        self.assertNotIn(f"py::foo:{script}", child_perf_file_contents)
+        self.assertNotIn(f"py::bar:{script}", child_perf_file_contents)
+        self.assertNotIn(f"py::baz:{script}", child_perf_file_contents)
+
     @unittest.skipIf(support.check_bolt_optimized(), "fails on BOLT instrumented binaries")
     def test_sys_api(self):
         code = """if 1: