Add ASAN build for qtbase

The test run is wrapped with a special TESTRUNNER script that ignores
failing tests (there are several tests failing when built with ASAN) and
also ignores LSAN errors (memory leaks - but still visible in the
output).

The test run only fails if a test reports ASAN errors or if it
crashes (or times out, which is like a crash caused by qtestlib's
watchdog timer).

Fixes: QTQAINFRA-5025
Change-Id: I861756ab49388ac4a52409d3a780684244e469b1
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

1 files changed, 49 insertions, 0 deletions

diff --git a/util/testrunner/sanitizer-testrunner.py b/util/testrunner/sanitizer-testrunner.py
new file mode 100755
index 0000000000..d1f0310d16
--- /dev/null
+++ b/util/testrunner/sanitizer-testrunner.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+import os
+import re
+import sys
+import logging as L
+from subprocess import Popen, PIPE
+
+
+# Thin testrunner that ignores failures in tests and only catches
+# crashes or ASAN errors.
+#
+# It executes its arguments as a command line, and parses the stderr for the
+# following regex:
+detect_ASAN = re.compile(r"^==[0-9]+==ERROR: AddressSanitizer")
+
+
+my_name = os.path.basename(sys.argv[0])
+logging_format = my_name + " %(levelname)8s: %(message)s"
+L.basicConfig(format=logging_format, level=L.DEBUG)
+
+proc = None
+if sys.argv[1] == "-f":            # hidden option to parse pre-existing files
+    f = open(sys.argv[2], "r", errors="ignore")
+else:
+    proc = Popen(sys.argv[1:], stderr=PIPE, universal_newlines=True, errors="ignore")
+    f = proc.stderr
+
+issues_detected = False
+for line in f:
+    if proc:
+        # We don't want the stderr of the subprocess to disappear, so print it.
+        print(line, file=sys.stderr, end="")
+    if detect_ASAN.match(line):
+        issues_detected = True
+f.close()
+if proc:
+    proc.wait()
+    rc = proc.returncode
+    L.info("Test exit code was: %d", rc)
+    if not ( 0 <= rc <= 127 ):
+        L.error("Crash detected")
+        exit(1)
+
+if issues_detected:
+    L.error("ASAN issues detected")
+    exit(1)