From 76c26eaca4147ba7e3e8d7379c5a828f0b512a46 Mon Sep 17 00:00:00 2001
From: Alex Waygood <Alex.Waygood@Gmail.com>
Date: Fri, 28 Jul 2023 00:57:55 +0100
Subject: gh-106368: Argument clinic tests: improve failure message when tests
 in `ClinicExternalTests` fail (#107364)

---
 Lib/test/test_clinic.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/test/test_clinic.py b/Lib/test/test_clinic.py
index d21c7d8..2f74ee2 100644
--- a/Lib/test/test_clinic.py
+++ b/Lib/test/test_clinic.py
@@ -1386,7 +1386,7 @@ class ClinicExternalTest(TestCase):
         ) as proc:
             proc.wait()
             if expect_success and proc.returncode:
-                self.fail("".join(proc.stderr))
+                self.fail("".join([*proc.stdout, *proc.stderr]))
             stdout = proc.stdout.read()
             stderr = proc.stderr.read()
             # Clinic never writes to stderr.
-- 
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