compilerplugins/clang/test/unusedvariablemore.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <sal/config.h>
  11 #include <sal/types.h>
  12 #include <map>
  13
  14 struct SAL_WARN_UNUSED Point
  15 {
  16 };
  17 struct SAL_WARN_UNUSED Rectangle
  18 {
  19     Rectangle();
  20     Rectangle(int width, int height);
  21     Rectangle& Union(const Rectangle&) { return *this; }
  22     Rectangle& Intersection(const Rectangle&);
  23     Rectangle& operator+=(const Point& rPt);
  24 };
  25
  26 void func1()
  27 {
  28     Rectangle aTmp1; // expected-error {{unused variable 'aTmp1' [loplugin:unusedvariablemore]}}
  29     aTmp1.Union(Rectangle(10, 10));
  30 }
  31
  32 void func2()
  33 {
  34     Rectangle aViewArea(
  35         10, 10); // expected-error@-1 {{unused variable 'aViewArea' [loplugin:unusedvariablemore]}}
  36     aViewArea += Point();
  37     aViewArea.Intersection(Rectangle(0, 0));
  38 }
  39
  40 //---------------------------------------------------------------------
  41 // Negative tests
  42 //---------------------------------------------------------------------
  43
  44 Rectangle func3(const Rectangle& rRect)
  45 {
  46     Rectangle aTmpRect(Rectangle(10, 10));
  47     return aTmpRect.Union(rRect);
  48 }
  49
  50 void func4()
  51 {
  52     std::map<int, int> aMimeTypeMap;
  53     aMimeTypeMap[1] = 0;
  54     int aExportMimeType(aMimeTypeMap[0]);
  55     (void)aExportMimeType;
  56 }
  57
  58 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */