1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <streambuf>
// template <class charT, class traits = char_traits<charT> >
// class basic_streambuf;
// streamsize sgetn(char_type* s, streamsize n);
#include <streambuf>
#include <cassert>
#include "test_macros.h"
int xsgetn_called = 0;
struct test
: public std::basic_streambuf<char>
{
test() {}
protected:
std::streamsize xsgetn(char_type*, std::streamsize)
{
++xsgetn_called;
return 10;
}
};
int main(int, char**)
{
test t;
assert(xsgetn_called == 0);
assert(t.sgetn(0, 0) == 10);
assert(xsgetn_called == 1);
return 0;
}
|
