1 files changed, 66 insertions, 0 deletions
diff --git a/compilerplugins/clang/test/oncevar.cxx b/compilerplugins/clang/test/oncevar.cxx
new file mode 100644
index 000000000..c8cc7bc13
--- /dev/null
+++ b/compilerplugins/clang/test/oncevar.cxx
@@ -0,0 +1,66 @@
+/* -*- 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 <rtl/ustring.hxx>
+
+/*int foo() { return 1; }*/
+
+void call_value(int);
+void call_const_ref(int const &);
+void call_ref(int &);
+void call_value(OUString);
+void call_const_ref(OUString const &);
+void call_ref(OUString &);
+
+template<typename T> void f() {
+    int i = sizeof (T) + 1; // expected-error {{var used only once, should be inlined or declared const [loplugin:oncevar]}}
+    call_value(i); // expected-note {{used here [loplugin:oncevar]}}
+}
+template void f<int>(); // needed for clang-cl
+
+class Foo;
+void method1(const Foo**);
+
+int main() {
+/* TODO
+    int i;
+    int x = 2;
+    if ( (i = foo()) == 0 ) {
+        x = 1;
+    }
+*/
+
+
+    int i1 = 2; // expected-error {{var used only once, should be inlined or declared const [loplugin:oncevar]}}
+    call_value(i1); // expected-note {{used here [loplugin:oncevar]}}
+    int i2 = 2; // expected-error {{var used only once, should be inlined or declared const [loplugin:oncevar]}}
+    call_const_ref(i2); // expected-note {{used here [loplugin:oncevar]}}
+
+    // don't expect warnings here
+    int i3;
+    call_ref(i3);
+    int const i4 = 2;
+    call_value(i4);
+
+    OUString s1("xxx"); // expected-error {{var used only once, should be inlined or declared const [loplugin:oncevar]}}
+    call_value(s1); // expected-note {{used here [loplugin:oncevar]}}
+    OUString s2("xxx"); // expected-error {{var used only once, should be inlined or declared const [loplugin:oncevar]}}
+    call_const_ref(s2); // expected-note {{used here [loplugin:oncevar]}}
+
+    // don't expect warnings here
+    OUString s3;
+    call_ref(s3);
+    OUString const s4("xxx");
+    call_value(s4);
+
+    const Foo* pInternalArgs[] = { nullptr };
+    method1(pInternalArgs);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */