fixed #13828 - clang-tidy aliases in findings were not handled properly

lib/cppcheck.cpp

@@ -1964,26 +1964,28 @@ void CppCheck::analyseClangTidy(const FileSettings &fileSettings)
         const std::string errorString = line.substr(endErrorPos, line.length());
 
         std::string fixedpath = Path::simplifyPath(line.substr(0, endNamePos));
+        fixedpath = Path::toNativeSeparators(std::move(fixedpath));
         const auto lineNumber = strToInt<int64_t>(lineNumString);
         const auto column = strToInt<int64_t>(columnNumString);
-        fixedpath = Path::toNativeSeparators(std::move(fixedpath));
 
         ErrorMessage errmsg;
         errmsg.callStack.emplace_back(fixedpath, lineNumber, column);
-
-        errmsg.id = "clang-tidy-" + errorString.substr(1, errorString.length() - 2);
-        if (errmsg.id.find("performance") != std::string::npos)
-            errmsg.severity = Severity::performance;
-        else if (errmsg.id.find("portability") != std::string::npos)
-            errmsg.severity = Severity::portability;
-        else if (errmsg.id.find("cert") != std::string::npos || errmsg.id.find("misc") != std::string::npos || errmsg.id.find("unused") != std::string::npos)
-            errmsg.severity = Severity::warning;
-        else
-            errmsg.severity = Severity::style;
-
         errmsg.file0 = std::move(fixedpath);
         errmsg.setmsg(trim(messageString));
-        mErrorLogger.reportErr(errmsg);
+
+        for (const auto& id : splitString(errorString.substr(1, errorString.length() - 2), ',')) {
+            errmsg.id = "clang-tidy-" + id;
+            if (errmsg.id.find("performance") != std::string::npos)
+                errmsg.severity = Severity::performance;
+            else if (errmsg.id.find("portability") != std::string::npos)
+                errmsg.severity = Severity::portability;
+            else if (errmsg.id.find("cert") != std::string::npos || errmsg.id.find("misc") != std::string::npos || errmsg.id.find("unused") != std::string::npos)
+                errmsg.severity = Severity::warning;
+            else
+                errmsg.severity = Severity::style;
+
+            mErrorLogger.reportErr(errmsg);
+        }
     }
 }
 

test/cli/other_test.py

@@ -3463,6 +3463,44 @@ def test_clang_tidy_project(tmpdir):
     __test_clang_tidy(tmpdir, True)
 
 
+@pytest.mark.skipif(not has_clang_tidy, reason='clang-tidy is not available')
+def test_clang_tidy_error_exit(tmp_path):  # #13828
+    test_file = tmp_path / 'test.cpp'
+    with open(test_file, 'wt') as f:
+        f.write(
+"""#include <string>
+#include <utility>
+
+// cppcheck-suppress clang-tidy-modernize-use-trailing-return-type
+static bool f() // NOLINT(misc-use-anonymous-namespace)
+{
+    std::string str;
+    const std::string str1 = std::move(str);
+    (void)str1;
+    return str.empty();
+}""")
+
+    # TODO: remove project file usage when --clang-tidy works with non-project files
+    project_file = __write_compdb(tmp_path, str(test_file))
+
+    args = [
+        '-q',
+        '--template=simple',
+        '--inline-suppr',
+        '--std=c++11',
+        '--clang-tidy',
+        '--project={}'.format(project_file)
+    ]
+
+    exitcode, stdout, stderr = cppcheck(args)
+    assert stdout.splitlines() == []
+    assert stderr.splitlines() == [
+        "{}:10:12: style: 'str' used after it was moved [clang-tidy-bugprone-use-after-move]".format(test_file),
+        "{}:10:12: style: 'str' used after it was moved [clang-tidy-hicpp-invalid-access-moved]".format(test_file)
+    ]
+    assert exitcode == 0, stdout
+
+
 def test_suppress_unmatched_wildcard(tmp_path):  # #13660
     test_file = tmp_path / 'test.c'
     with open(test_file, 'wt') as f: