forked from mirror/libcxx
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <strstream>
|
|
|
|
// class strstreambuf
|
|
|
|
// pos_type seekpos(pos_type sp,
|
|
// ios_base::openmode which = ios_base::in | ios_base::out);
|
|
|
|
#include <strstream>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
{
|
|
char buf[] = "0123456789";
|
|
std::strstreambuf sb(buf, 0);
|
|
assert(sb.pubseekpos(3, std::ios_base::out) == -1);
|
|
assert(sb.pubseekpos(3, std::ios_base::in | std::ios_base::out) == -1);
|
|
assert(sb.pubseekpos(3, std::ios_base::in) == 3);
|
|
assert(sb.sgetc() == '3');
|
|
}
|
|
{
|
|
char buf[] = "0123456789";
|
|
std::strstreambuf sb(buf, 0, buf);
|
|
assert(sb.pubseekpos(3, std::ios_base::in) == 3);
|
|
assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == 3);
|
|
assert(sb.pubseekpos(3, std::ios_base::out) == 3);
|
|
assert(sb.sputc('a') == 'a');
|
|
assert(sb.str() == std::string("012a456789"));
|
|
}
|
|
}
|