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-rw-r--r--compilerplugins/clang/test/classmemaccess.cxx36
1 files changed, 36 insertions, 0 deletions
diff --git a/compilerplugins/clang/test/classmemaccess.cxx b/compilerplugins/clang/test/classmemaccess.cxx
new file mode 100644
index 0000000000..05bb457f87
--- /dev/null
+++ b/compilerplugins/clang/test/classmemaccess.cxx
@@ -0,0 +1,36 @@
+/* -*- 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 <cstring>
+
+void f(struct Incomplete* p1, struct S* p2);
+
+struct S
+{
+ S();
+};
+
+void f(struct Incomplete* p1, struct S* p2)
+{
+ S s;
+ // expected-error@+1 {{writing to an object of non-trivial type 'S'; use assignment instead [loplugin:classmemaccess]}}
+ std::memset(&s, 0, sizeof s);
+ // expected-error@+1 {{writing to an object of non-trivial type 'S'; use assignment instead [loplugin:classmemaccess]}}
+ std::memset(static_cast<void*>(&s), 0, sizeof s);
+ auto const disableWarning = static_cast<void*>(&s);
+ std::memset(disableWarning, 0, sizeof s);
+ S a[1][1];
+ // expected-error@+1 {{writing to an object of non-trivial type 'S'; use assignment instead [loplugin:classmemaccess]}}
+ std::memset(a, 0, sizeof a);
+ std::memset(p1, 0, 10); // conservatively assume Incomplete may be trivial
+ // expected-error@+1 {{writing to an object of non-trivial type 'S'; use assignment instead [loplugin:classmemaccess]}}
+ std::memset(p2, 0, 10);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */