| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // <istream> |
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| 10 | |
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| 11 | // template <class charT, class traits = char_traits<charT> > |
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| 12 | // class basic_istream; |
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| 13 | |
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| 14 | // basic_istream<charT,traits>& operator>>(basic_istream<charT,traits>& |
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| 15 | // (*pf)(basic_istream<charT,traits>&)); |
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| 16 | |
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| 17 | #include <istream> |
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| 18 | #include <cassert> |
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| 19 | |
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| 20 | #include "test_macros.h" |
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| 21 | |
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| 22 | int f_called = 0; |
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| 23 | |
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| 24 | template <class CharT> |
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| 25 | std::basic_istream<CharT>& |
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| 26 | f(std::basic_istream<CharT>& is) |
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| 27 | { |
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| 28 | ++f_called; |
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| 29 | return is; |
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| 30 | } |
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| 31 | |
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| 32 | int main(int, char**) |
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| 33 | { |
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| 34 | { |
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| 35 | std::istream is((std::streambuf*)0); |
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| 36 | is >> f; |
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| 37 | assert(f_called == 1); |
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| 38 | } |
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| 39 | |
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| 40 | return 0; |
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| 41 | } |
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| 42 | |
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