Fix #14225 (addons; add optional "hash" attribute for warning messages)

Author: danmar

test/cli/premium_test.py

@@ -156,3 +156,20 @@ def test_invalid_license_retry(tmpdir):
 
     _, _, stderr = cppcheck(args)
     assert 'Invalid license' not in stderr
+
+
+def test_hash(tmpdir):
+    # Trac 14225 - warnings with hash
+    test_file = os.path.join(tmpdir, 'test.c')
+    addon_file = os.path.join(tmpdir, 'premiumaddon.py')
+
+    with open(test_file, 'wt') as f:
+        f.write('void foo();\n')
+
+    args = [f"--addon={addon_file}", '--xml', test_file]
+
+    with open(addon_file, 'wt') as f:
+        f.write('print(\'{"addon":"a","column":1,"errorId":"id","extra":"","file":"test.c","hash":123,"linenr":1,"message":"bug","severity":"error"}\')')
+
+    _, _, stderr = cppcheck(args)
+    assert '<error id="a-id" severity="error" msg="bug" verbose="bug" hash="123" ' in stderr