Merge branch 'main' into subinterpreters-allow-background-threads

python · ericsnowcurrently · Oct 2, 2023 · Sep 25, 2023 · Sep 26, 2023 · Sep 26, 2023
commit 55d7090233f249f4f4ec2291deae9a27bbbe8da4
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
@@ -40,6 +40,23 @@
 platforms_to_skip = ('netbsd5', 'hp-ux11')
 
 
+# gh-89363: Skip fork() test if Python is built with Address Sanitizer (ASAN)
+# to work around a libasan race condition, dead lock in pthread_create().
+skip_if_asan_fork = support.skip_if_sanitizer(
+                        "libasan has a pthread_create() dead lock",
+                        address=True)
+
+
+def skip_unless_reliable_fork(test):
+    if not support.has_fork_support:
+        return unittest.skip("requires working os.fork()")(test)
+    if sys.platform in platforms_to_skip:
+        return unittest.skip("due to known OS bug related to thread+fork")(test)
+    if support.check_sanitizer(address=True):
+        return unittest.skip("libasan has a pthread_create() dead lock related to thread+fork")(test)
+    return test
+
+
 def requires_subinterpreters(meth):
     """Decorator to skip a test if subinterpreters are not supported."""
     return unittest.skipIf(interpreters is None,