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44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// Can't test the system lib because this test enables debug mode
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// MODULES_DEFINES: _LIBCPP_DEBUG=1
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// UNSUPPORTED: with_system_cxx_lib
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// UNSUPPORTED: c++98, c++03
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// UNSUPPORTED: windows
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// UNSUPPORTED: with_system_cxx_lib
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// <list>
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// Call prev(forward_iterator, -1)
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#define _LIBCPP_DEBUG 0
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#include <iterator>
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#include "test_macros.h"
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#include "debug_mode_helper.h"
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#include "test_iterators.h"
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int main(int, char**)
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{
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int a[] = {1, 2, 3};
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bidirectional_iterator<int *> bidi(a+1);
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std::prev(bidi, -1); // should work fine
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std::prev(bidi, 0); // should work fine
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std::prev(bidi, 1); // should work fine
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forward_iterator<int *> it(a+1);
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std::prev(it, -1); // should work fine
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std::prev(it, 0); // should work fine
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EXPECT_DEATH( std::prev(it, 1) ); // can't go backwards on a FwdIter
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return 0;
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}
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