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c3ae85dbcf
seekoff.pass.cpp: libc++'s tests are asserting things about the buffer passed to pubsetbuf. [filebuf.virtuals]/12 says that what the filebuf does with the buffer you give it is completely implementation defined. The MSVC++ implementation takes that buffer and hands it off to the CRT (by calling ::setvbuf) and the CRT doesn't necessarily follow the pattern this test wants. This change simply makes asserts against the buffer's contents use LIBCPP_ASSERT instead of assert. pbackfail.pass.cpp: libc++'s tests are asserting about what characters will and will not be available in the putback area. [filebuf.virtuals]/9 says "The function can alter the number of putback positions available as a result of any call." This change LIBCPP_ASSERTS libc++'s behavior, but checks invariants of the putback area independently. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@330999 91177308-0d34-0410-b5e6-96231b3b80d8
67 lines
2.3 KiB
C++
67 lines
2.3 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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// <fstream>
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// pos_type seekoff(off_type off, ios_base::seekdir way,
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// ios_base::openmode which = ios_base::in | ios_base::out);
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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 <fstream>
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#include <cassert>
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#include "test_macros.h"
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int main()
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{
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{
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char buf[10];
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typedef std::filebuf::pos_type pos_type;
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std::filebuf f;
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f.pubsetbuf(buf, sizeof(buf));
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assert(f.open("seekoff.dat", std::ios_base::in | std::ios_base::out
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| std::ios_base::trunc) != 0);
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assert(f.is_open());
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f.sputn("abcdefghijklmnopqrstuvwxyz", 26);
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LIBCPP_ASSERT(buf[0] == 'v');
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pos_type p = f.pubseekoff(-15, std::ios_base::cur);
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assert(p == 11);
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assert(f.sgetc() == 'l');
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f.pubseekoff(0, std::ios_base::beg);
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assert(f.sgetc() == 'a');
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f.pubseekoff(-1, std::ios_base::end);
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assert(f.sgetc() == 'z');
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assert(f.pubseekpos(p) == p);
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assert(f.sgetc() == 'l');
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}
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std::remove("seekoff.dat");
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{
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wchar_t buf[10];
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typedef std::filebuf::pos_type pos_type;
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std::wfilebuf f;
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f.pubsetbuf(buf, sizeof(buf)/sizeof(buf[0]));
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assert(f.open("seekoff.dat", std::ios_base::in | std::ios_base::out
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| std::ios_base::trunc) != 0);
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assert(f.is_open());
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f.sputn(L"abcdefghijklmnopqrstuvwxyz", 26);
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LIBCPP_ASSERT(buf[0] == L'v');
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pos_type p = f.pubseekoff(-15, std::ios_base::cur);
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assert(p == 11);
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assert(f.sgetc() == L'l');
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f.pubseekoff(0, std::ios_base::beg);
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assert(f.sgetc() == L'a');
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f.pubseekoff(-1, std::ios_base::end);
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assert(f.sgetc() == L'z');
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assert(f.pubseekpos(p) == p);
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assert(f.sgetc() == L'l');
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}
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std::remove("seekoff.dat");
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}
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