[3.15] gh-149701: Fully silence potential hash -r error (GH-149702) (GH-149757)

(cherry picked from commit cd6096887e)

Lib/test/test_venv.py

@@ -656,6 +656,26 @@ def test_deactivate_with_strict_bash_opts(self):
         self.assertEqual(out, "".encode())
         self.assertEqual(err, "".encode())
 
+    # gh-149701: Test exit code is zero even when hashing is disabled
+    @unittest.skipIf(os.name == 'nt', 'not relevant on Windows')
+    def test_deactivate_with_strict_bash_opts_and_hashing_disabled(self):
+        bash = shutil.which("bash")
+        if bash is None:
+            self.skipTest("bash required for this test")
+        rmtree(self.env_dir)
+        builder = venv.EnvBuilder(clear=True)
+        builder.create(self.env_dir)
+        activate = os.path.join(self.env_dir, self.bindir, "activate")
+        test_script = os.path.join(self.env_dir, "test_hash_disabled.sh")
+        with open(test_script, "w") as f:
+            f.write("set -euo pipefail\n"
+                    "set +h\n"  # disable hashing
+                    f"source {activate}\n"
+                    "deactivate")
+        out, err = check_output([bash, test_script])
+        self.assertEqual(out, "".encode())
+        self.assertEqual(err, "".encode())
+
 
     @unittest.skipUnless(sys.platform == 'darwin', 'only relevant on macOS')
     def test_macos_env(self):

Lib/venv/scripts/common/activate

@@ -17,7 +17,7 @@ deactivate () {
     # Call hash to forget past locations. Without forgetting
     # past locations the $PATH changes we made may not be respected.
     # See "man bash" for more details. hash is usually a builtin of your shell
-    hash -r 2> /dev/null
+    hash -r 2> /dev/null || true
 
     if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
         PS1="${_OLD_VIRTUAL_PS1:-}"
@@ -73,4 +73,4 @@ fi
 
 # Call hash to forget past commands. Without forgetting
 # past commands the $PATH changes we made may not be respected
-hash -r 2> /dev/null
+hash -r 2> /dev/null || true

Misc/NEWS.d/next/Library/2026-05-12-06-24-54.gh-issue-149701.8v9RTm.rst

@@ -0,0 +1 @@
+Fix bad return code from Lib/venv/bin/activate if hashing is disabled