summaryrefslogtreecommitdiffstats
path: root/compilerplugins/clang/test/vclwidgets.cxx
diff options
context:
space:
mode:
Diffstat (limited to 'compilerplugins/clang/test/vclwidgets.cxx')
-rw-r--r--compilerplugins/clang/test/vclwidgets.cxx99
1 files changed, 99 insertions, 0 deletions
diff --git a/compilerplugins/clang/test/vclwidgets.cxx b/compilerplugins/clang/test/vclwidgets.cxx
new file mode 100644
index 0000000000..1ff828e280
--- /dev/null
+++ b/compilerplugins/clang/test/vclwidgets.cxx
@@ -0,0 +1,99 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <sal/config.h>
+
+#include <atomic>
+
+#include <vcl/vclptr.hxx>
+#include <vcl/vclreferencebase.hxx>
+
+struct Widget : public VclReferenceBase
+{
+ VclPtr<Widget> mpParent;
+
+ void widget1()
+ {
+ // test that we ignore assignments from a member field
+ Widget* p = mpParent;
+ (void)p;
+ // test against false+
+ p = (true) ? mpParent.get() : nullptr;
+ }
+
+ ~Widget() override
+ {
+ disposeOnce();
+ }
+
+ void dispose() override
+ {
+ mpParent.clear();
+ VclReferenceBase::dispose();
+ }
+};
+
+VclPtr<Widget> f()
+{
+ return nullptr;
+}
+
+Widget* g()
+{
+ return nullptr;
+}
+
+// test the variable init detection
+void bar()
+{
+ Widget* p = f(); // expected-error {{assigning a returned-by-value VclPtr<T> to a T* variable is dodgy, should be assigned to a VclPtr. If you know that the RHS does not return a newly created T, then add a '.get()' to the RHS [loplugin:vclwidgets]}}
+ (void)p;
+ Widget* q = g();
+ (void)q;
+ Widget* r = nullptr;
+ (void)r;
+}
+
+// test the assignment detection
+void bar2()
+{
+ Widget* p;
+ p = nullptr;
+ p = f(); // expected-error {{assigning a returned-by-value VclPtr<T> to a T* variable is dodgy, should be assigned to a VclPtr. If you know that the RHS does not return a newly created T, then add a '.get()' to the RHS [loplugin:vclwidgets]}}
+ (void)p;
+ Widget* q;
+ q = g();
+ (void)q;
+}
+
+
+// test against false+
+
+template<class T>
+T * get() { return nullptr; }
+
+void bar3()
+{
+ Widget* p;
+ p = get<Widget>();
+ (void)p;
+}
+
+void bar4() {
+ VclPtr<Widget> p1;
+ //TODO: one error should be enough here?
+ // expected-error@+2 {{calling delete on instance of VclReferenceBase subclass, must rather call disposeAndClear() [loplugin:vclwidgets]}}
+ // expected-error@+1 {{calling delete on instance of VclPtr, must rather call disposeAndClear() [loplugin:vclwidgets]}}
+ delete p1;
+ std::atomic<int *> p2;
+ // No false positive here:
+ delete p2;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */