debugger: add a manual test for an endless loop and check for

-thread-group-started in addition to -thread-group-created

src/plugins/debugger/gdb/gdbengine.cpp

@@ -440,8 +440,11 @@ void GdbEngine::handleResponse(const QByteArray &buff)
                 // 7.1-symbianelf has "{id="i1"}"
             } else if (asyncClass == "thread-group-started") {
                 // 7.1-symbianelf has "{id="i1",pid="42000"}"
-            } else if (asyncClass == "thread-group-created") {
-                // Archer has "{id="28902"}"
+            } else if (asyncClass == "thread-group-created"
+                    || asyncClass == "thread-group-started") {
+                // Archer had only "{id="28902"}" at some point of 6.8.x.
+                // *-created seems to be standard nowadays, but in early
+                // 7.0.x, there was a *-started instead.
                 int progress = m_progress->progressValue();
                 m_progress->setProgressValue(qMin(70, progress + 1));
                 QByteArray id = result.findChild("id").data();

tests/manual/gdbdebugger/simple/app.cpp

@@ -1531,6 +1531,14 @@ void testEndlessRecursion()
     testEndlessRecursion();
 }
 
+int testEndlessLoop()
+{
+    qlonglong a = 1;
+    while (a > 0)
+        ++a;
+    return a;
+}
+
 QString fooxx()
 {
     return "bababa";
@@ -1550,6 +1558,7 @@ int main(int argc, char *argv[])
     testFunctionPointer();
     testAnonymous();
     testReference();
+    //testEndlessLoop();
     //testEndlessRecursion();
     testQStack();
     testUninitialized();
@@ -1625,9 +1634,6 @@ int main(int argc, char *argv[])
 
     Q_UNUSED(s);
     Q_UNUSED(w);
-
-    while(true)
-        ;
 }
 
 QT_BEGIN_NAMESPACE