libstdc++-v3/testsuite/22_locale/facet/2.cc

   1 // { dg-require-namedlocale "es_MX.ISO8859-1" }
   2
   3 // 2000-08-31 Benjamin Kosnik <bkoz@redhat.com>
   4
   5 // Copyright (C) 2000-2019 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 // 22.1.1.1.2 - class locale::facet [lib.locale.facet]
  23
  24 #include <cwchar> // for mbstate_t
  25 #include <locale>
  26 #include <stdexcept>
  27 #include <string>
  28 #include <iterator>
  29 #include <limits>
  30 #include <testsuite_hooks.h>
  31
  32 // Static counter for use in checking ctors/dtors.
  33 static std::size_t counter;
  34
  35 class surf : public std::locale::facet
  36 {
  37 public:
  38   static std::locale::id                id;
  39   surf(size_t refs = 0): std::locale::facet(refs) { ++counter; }
  40   ~surf() { --counter; }
  41 };
  42
  43 std::locale::id surf::id;
  44
  45 typedef surf facet_type;
  46
  47 void test02()
  48 {
  49   using namespace std;
  50
  51   // 1: Destroyed when out of scope.
  52   VERIFY( counter == 0 );
  53   {
  54     locale loc01(locale::classic(), new facet_type);
  55     VERIFY( counter == 1 );
  56   }
  57   VERIFY( counter == 0 );
  58
  59   // 2: Not destroyed when out of scope, deliberately leaked.
  60   VERIFY( counter == 0 );
  61   {
  62     // Default refs argument is zero.
  63     locale loc02(locale::classic(), new facet_type(1));
  64     VERIFY( counter == 1 );
  65   }
  66   VERIFY( counter == 1 );
  67
  68   // 3: Pathological.
  69   counter = 0;
  70   {
  71     // Test bounds.
  72     facet_type* f = new facet_type(numeric_limits<size_t>::max());
  73     VERIFY( counter == 1 );
  74     // Add a reference.
  75     locale loc01(locale::classic(), f);
  76     {
  77       // Add another reference...
  78       locale loc02(locale::classic(), f);
  79     }
  80     VERIFY( counter == 1 );
  81   }
  82
  83   // 4: Named locale should destroy facets when it goes out of scope.
  84   // Not quite sure how to test for this w/o valgrind at the moment.
  85   {
  86     locale loc03 = locale(ISO_8859(1,es_MX));
  87   }
  88 }
  89
  90 int main ()
  91 {
  92   test02();
  93   return 0;
  94 }