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Alter the terminal streams such that they do not get added to the atexit chain, and thus never get destructed. 

llvm-svn: 152926
This commit is contained in:
Howard Hinnant 2012-03-16 15:13:51 +00:00
parent c507b1e262
commit b4c7522790
1 changed files with 37 additions and 24 deletions
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61
libcxx/src/iostream.cpp
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@ -9,45 +9,58 @@
#include "__std_stream"
#include "string"
#include "new"
_LIBCPP_BEGIN_NAMESPACE_STD
static __stdinbuf<char> __cin(stdin);
static __stdoutbuf<char> __cout(stdout);
static __stdoutbuf<char> __cerr(stderr);
static __stdinbuf<wchar_t> __wcin(stdin);
static __stdoutbuf<wchar_t> __wcout(stdout);
static __stdoutbuf<wchar_t> __wcerr(stderr);
alignas (__stdinbuf<char> ) static char __cin [sizeof(__stdinbuf <char>)];
alignas (__stdoutbuf<char>) static char __cout[sizeof(__stdoutbuf<char>)];
alignas (__stdoutbuf<char>) static char __cerr[sizeof(__stdoutbuf<char>)];
alignas (__stdinbuf<wchar_t> ) static char __wcin [sizeof(__stdinbuf <wchar_t>)];
alignas (__stdoutbuf<wchar_t>) static char __wcout[sizeof(__stdoutbuf<wchar_t>)];
alignas (__stdoutbuf<wchar_t>) static char __wcerr[sizeof(__stdoutbuf<wchar_t>)];
istream cin(&__cin);
ostream cout(&__cout);
ostream cerr(&__cerr);
ostream clog(&__cerr);
wistream wcin(&__wcin);
wostream wcout(&__wcout);
wostream wcerr(&__wcerr);
wostream wclog(&__wcerr);
alignas (istream) char cin [sizeof(istream)];
alignas (ostream) char cout[sizeof(ostream)];
alignas (ostream) char cerr[sizeof(ostream)];
alignas (ostream) char clog[sizeof(ostream)];
alignas (wistream) char wcin [sizeof(wistream)];
alignas (wostream) char wcout[sizeof(wostream)];
alignas (wostream) char wcerr[sizeof(wostream)];
alignas (wostream) char wclog[sizeof(wostream)];
ios_base::Init __start_std_streams;
ios_base::Init::Init()
{
cin.tie(&cout);
_VSTD::unitbuf(cerr);
cerr.tie(&cout);
istream* cin_ptr = ::new(cin) istream(::new(__cin) __stdinbuf <char>(stdin) );
ostream* cout_ptr = ::new(cout) ostream(::new(__cout) __stdoutbuf<char>(stdout));
ostream* cerr_ptr = ::new(cerr) ostream(::new(__cerr) __stdoutbuf<char>(stderr));
::new(clog) ostream(cerr_ptr->rdbuf());
cin_ptr->tie(cout_ptr);
_VSTD::unitbuf(*cerr_ptr);
cerr_ptr->tie(cout_ptr);
wcin.tie(&wcout);
_VSTD::unitbuf(wcerr);
wcerr.tie(&wcout);
wistream* wcin_ptr = ::new(wcin) wistream(::new(__wcin) __stdinbuf <wchar_t>(stdin) );
wostream* wcout_ptr = ::new(wcout) wostream(::new(__wcout) __stdoutbuf<wchar_t>(stdout));
wostream* wcerr_ptr = ::new(wcerr) wostream(::new(__wcerr) __stdoutbuf<wchar_t>(stderr));
::new(wclog) wostream(wcerr_ptr->rdbuf());
wcin_ptr->tie(wcout_ptr);
_VSTD::unitbuf(*wcerr_ptr);
wcerr_ptr->tie(wcout_ptr);
}
ios_base::Init::~Init()
{
cout.flush();
clog.flush();
ostream* cout_ptr = (ostream*)cout;
ostream* clog_ptr = (ostream*)clog;
cout_ptr->flush();
clog_ptr->flush();
wcout.flush();
wclog.flush();
wostream* wcout_ptr = (wostream*)wcout;
wostream* wclog_ptr = (wostream*)wclog;
wcout_ptr->flush();
wclog_ptr->flush();
}
_LIBCPP_END_NAMESPACE_STD