QDBusAdaptorConnector: place a static int into BSS instead of DATA

The cachedRelaySlotMethodIndex started out as -1, assuming no slot
could have that index.

But 0 is just as good a marker, because we know that method index 0
will be one of QObject's (destroyed() or deleteLater()).

So start out with a zero initial value, which means the variable can
be placed in the BSS segment now and doesn't need to be stored in
DATA.

Pick-to: 6.3 6.2
Change-Id: I40b96d54f11e60348f465cafa15af98d41038c95
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/dbus/qdbusabstractadaptor.cpp b/src/dbus/qdbusabstractadaptor.cpp
index 8d99577929..d048ae2e52 100644
--- a/src/dbus/qdbusabstractadaptor.cpp
+++ b/src/dbus/qdbusabstractadaptor.cpp
@@ -58,13 +58,13 @@
 
 QT_BEGIN_NAMESPACE
 
-static int cachedRelaySlotMethodIndex = -1;
+static int cachedRelaySlotMethodIndex = 0;
 
 int QDBusAdaptorConnector::relaySlotMethodIndex()
 {
-    if (cachedRelaySlotMethodIndex == -1) {
+    if (cachedRelaySlotMethodIndex == 0) {
         cachedRelaySlotMethodIndex = staticMetaObject.indexOfMethod("relaySlot()");
-        Q_ASSERT(cachedRelaySlotMethodIndex != -1);
+        Q_ASSERT(cachedRelaySlotMethodIndex != 0); // 0 should be deleteLater() or destroyed()
     }
     return cachedRelaySlotMethodIndex;
 }