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43 lines
1.3 KiB
C++
43 lines
1.3 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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// <strstream>
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// class strstreambuf
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// pos_type seekpos(pos_type sp,
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// ios_base::openmode which = ios_base::in | ios_base::out);
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#include <strstream>
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#include <cassert>
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#include "test_macros.h"
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int main(int, char**)
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{
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{
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char buf[] = "0123456789";
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std::strstreambuf sb(buf, 0);
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assert(sb.pubseekpos(3, std::ios_base::out) == -1);
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assert(sb.pubseekpos(3, std::ios_base::in | std::ios_base::out) == -1);
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assert(sb.pubseekpos(3, std::ios_base::in) == 3);
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assert(sb.sgetc() == '3');
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}
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{
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char buf[] = "0123456789";
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std::strstreambuf sb(buf, 0, buf);
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assert(sb.pubseekpos(3, std::ios_base::in) == 3);
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assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == 3);
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assert(sb.pubseekpos(3, std::ios_base::out) == 3);
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assert(sb.sputc('a') == 'a');
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assert(sb.str() == std::string("012a456789"));
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}
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return 0;
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}
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