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53 lines
1.1 KiB
C++
53 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <streambuf>
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// template <class charT, class traits = char_traits<charT> >
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// class basic_streambuf;
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// streamsize in_avail();
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#include <streambuf>
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#include <cassert>
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int showmanyc_called = 0;
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template <class CharT>
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struct test
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: public std::basic_streambuf<CharT>
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{
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typedef std::basic_streambuf<CharT> base;
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test() {}
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void setg(CharT* gbeg, CharT* gnext, CharT* gend)
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{
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base::setg(gbeg, gnext, gend);
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}
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protected:
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std::streamsize showmanyc()
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{
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++showmanyc_called;
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return 5;
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}
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};
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int main()
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{
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{
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test<char> t;
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assert(t.in_avail() == 5);
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assert(showmanyc_called == 1);
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char in[5];
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t.setg(in, in+2, in+5);
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assert(t.in_avail() == 3);
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}
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}
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