compilerplugins/clang/test/stringconcatauto.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * Based on LLVM/Clang.
   6  *
   7  * This file is distributed under the University of Illinois Open Source
   8  * License. See LICENSE.TXT for details.
   9  *
  10  */
  11
  12 #include <rtl/ustring.hxx>
  13
  14 void foo()
  15 {
  16     auto str1 = "str1" + OUString::number(10);
  17     // expected-error-re@-1 {{creating a variable of type 'rtl::OUStringConcat<{{.*}}>' will make it reference temporaries}}
  18     // expected-note@-2 {{use OUString instead}}
  19     OUString str2 = "str2" + OUString::number(20) + "ing";
  20     const auto& str3 = "str3" + OUString::number(30);
  21     // expected-error-re@-1 {{creating a variable of type 'const rtl::OUStringConcat<{{.*}}> &' will make it reference temporaries}}
  22     // expected-note@-2 {{use OUString instead}}
  23     const auto str4 = "str4" + OString::number(40);
  24     // expected-error-re@-1 {{creating a variable of type 'const rtl::OStringConcat<{{.*}}>' will make it reference temporaries}}
  25     // expected-note@-2 {{use OString instead}}
  26     auto str5 = OUString::number(50);
  27     // expected-error-re@-1 {{creating a variable of type 'rtl::OUStringNumber<{{.*}}>' will make it reference temporaries}}
  28     // expected-note@-2 {{use OUString instead}}
  29     (void)str1;
  30     (void)str2;
  31     (void)str3;
  32     (void)str4;
  33     (void)str5;
  34 }
  35
  36 struct A
  37 {
  38     auto bar()
  39     // expected-error-re@-1 {{returning a variable of type 'rtl::OStringConcat<{{.*}}>' will make it reference temporaries}}
  40     // expected-note@-2 {{use OString instead}}
  41     {
  42         return "bar" + OString::number(110);
  43     }
  44     auto baz()
  45     // expected-error-re@-1 {{returning a variable of type 'rtl::OStringNumber<{{.*}}>' will make it reference temporaries}}
  46     // expected-note@-2 {{use OString instead}}
  47     {
  48         return OString::number(120);
  49     }
  50 };
  51
  52 template <typename T> void fun(const T& par)
  53 // parameters are without warnings
  54 {
  55     const T& var = par;
  56     // expected-error-re@-1 {{creating a variable of type 'const rtl::OUStringConcat<{{.*}}> &' will make it reference temporaries}}
  57     // expected-note@-2 {{use OUString instead}}
  58     (void)var;
  59 }
  60
  61 void testfun() { fun("fun" + OUString::number(200)); }
  62
  63 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */