Improve error handling in qtestlib

Dump a stack trace on Linux if the process crashes. This will give us
much better log output in the new CI system. In addition, create a
watch dog thread, that kills the test if the test function times
out (ie. hangs)

Implementations of the stack trace dumping for Mac and Windows
are still pending.

Change-Id: I65426c5afe290a0a2019b881436a0c278f1cafaf
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/tests/auto/testlib/selftests/tst_selftests.cpp b/tests/auto/testlib/selftests/tst_selftests.cpp
index 488b65c657..a5840d16d2 100644
--- a/tests/auto/testlib/selftests/tst_selftests.cpp
+++ b/tests/auto/testlib/selftests/tst_selftests.cpp
@@ -566,7 +566,9 @@ void tst_Selftests::doRunSubTest(QString const& subdir, QStringList const& logge
 #endif
 
     QProcess proc;
-    static const QProcessEnvironment environment = processEnvironment();
+    QProcessEnvironment environment = processEnvironment();
+    if (crashes)
+        environment.insert("QTEST_DISABLE_STACK_DUMP", "1");
     proc.setProcessEnvironment(environment);
     const QString path = subdir + QLatin1Char('/') + subdir;
     proc.start(path, arguments);