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authorKent Hansen <khansen@trolltech.com>2009-05-07 15:18:51 (GMT)
committerKent Hansen <khansen@trolltech.com>2009-05-07 15:18:51 (GMT)
commit00f04527d3d28ab1aa5b90b9a05366012ff5d1e5 (patch)
treed44b989946d9248755a3e708caeca44ee1368c25 /src/corelib/statemachine
parentb39781b214e2502e0884bce88aa3ac324f2d0b12 (diff)
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don't add signal transition if target is null or signal doesn't exist
Diffstat (limited to 'src/corelib/statemachine')
-rw-r--r--src/corelib/statemachine/qstate.cpp9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/corelib/statemachine/qstate.cpp b/src/corelib/statemachine/qstate.cpp
index acee27d..4d12219 100644
--- a/src/corelib/statemachine/qstate.cpp
+++ b/src/corelib/statemachine/qstate.cpp
@@ -346,6 +346,15 @@ QSignalTransition *QState::addTransition(QObject *sender, const char *signal,
qWarning("QState::addTransition: signal cannot be null");
return 0;
}
+ if (!target) {
+ qWarning("QState::addTransition: cannot add transition to null state");
+ return 0;
+ }
+ if (*signal && sender->metaObject()->indexOfSignal(signal+1) == -1) {
+ qWarning("QState::addTransition: no such signal %s::%s",
+ sender->metaObject()->className(), signal+1);
+ return 0;
+ }
QSignalTransition *trans = new QSignalTransition(sender, signal, QList<QAbstractState*>() << target);
addTransition(trans);
return trans;