96 lines
3.1 KiB
C++
96 lines
3.1 KiB
C++
// Copyright (C) 2018-2019 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// rope (SGI extension)
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// { dg-do run }
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#include <ext/rope>
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#include <testsuite_hooks.h>
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void
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test01()
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{
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using __gnu_cxx::crope;
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char str_a[] =
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
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char str_b[] =
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"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
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"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
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"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
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"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
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"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";
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// Create ropes with leaf nodes longer than __lazy_threshold = 128
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// so substring nodes will be created by the next step
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crope leaf_rope_a(str_a);
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crope leaf_rope_b(str_b);
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// Create ropes with substring nodes referencing the leaf nodes
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// of the prior ropes
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crope substring_rope_a(leaf_rope_a.begin() + 1,
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leaf_rope_a.begin() + 199);
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crope substring_rope_b(leaf_rope_b.begin() + 1,
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leaf_rope_b.begin() + 199);
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// Create iterators to substring_rope_a
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crope::const_iterator cit_orig = substring_rope_a.begin();
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crope::iterator mit_orig = substring_rope_a.mutable_begin();
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// Dereference the iterators so they cache a portion of the substring
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// node in their internal buffers
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*cit_orig;
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*mit_orig;
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// Copy the original iterators, via both copy constructors and
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// assignment operators. Prior to the bug fix, these iterators
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// retained pointers to the internal buffers of the original
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// iterators.
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crope::const_iterator cit_copy(cit_orig);
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crope::iterator mit_copy(mit_orig);
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crope::const_iterator cit_assign; cit_assign = cit_orig;
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crope::iterator mit_assign; mit_assign = mit_orig;
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// Modify the original iterators to refer to substring_rope_b
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cit_orig = substring_rope_b.begin();
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mit_orig = substring_rope_b.mutable_begin();
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// Dereference the original iterators so they fill their internal
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// buffers with part of substring_rope_b
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*cit_orig;
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*mit_orig;
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// Verify that the copied iterators return data from
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// substring_rope_a, not substring_rope_b
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VERIFY(*cit_copy == 'a');
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VERIFY(*mit_copy == 'a');
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VERIFY(*cit_assign == 'a');
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VERIFY(*mit_assign == 'a');
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}
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int
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main()
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{
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test01();
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return 0;
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}
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