From 2d171d0cb4a72171b3c31f759d588026d56d5549 Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Tue, 7 Apr 2020 12:51:39 +1000
Subject: [PATCH] autotest: add sanity check for duplicate labels in LogWrite
 calls

---
 Tools/autotest/common.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Tools/autotest/common.py b/Tools/autotest/common.py
index 08529abee9..0c8942ab39 100644
--- a/Tools/autotest/common.py
+++ b/Tools/autotest/common.py
@@ -1344,7 +1344,12 @@ class AutoTest(ABC):
             if name not in docco_ids:
                 self.progress("Undocumented message: %s" % name)
                 continue
+            seen_labels = {}
             for label in code_ids[name]["labels"].split(","):
+                if label in seen_labels:
+                    raise NotAchievedException("%s.%s is duplicate label" %
+                                               (name, label))
+                seen_labels[label] = True
                 if label not in docco_ids[name]["labels"]:
                     raise NotAchievedException("%s.%s not in documented fields" %
                                                (name, label))