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-rw-r--r--compilerplugins/clang/test/oncevar.cxx66
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: */