[Bug libstdc++/12048] [3.4 Regression] unget does not work

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12048



------- Additional Comments From cvs-commit at gcc dot gnu dot org  2003-09-03 14:54 -------
Subject: Bug 12048

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	bkoz@gcc.gnu.org	2003-09-03 14:54:04

Modified files:
	libstdc++-v3   : ChangeLog 
	libstdc++-v3/docs/html/27_io: howto.html 
	libstdc++-v3/include/ext: stdio_sync_filebuf.h 
	libstdc++-v3/testsuite/ext: stdio_sync_filebuf_char.cc 
	                            stdio_sync_filebuf_wchar_t.cc 

Log message:
	2003-09-03  Petur Runolfsson  <peturr02@ru.is>
	
	PR libstdc++/12048
	* include/ext/stdio_sync_filebuf.h
	(stdio_sync_filebuf::_M_unget_buf): Declare it.
	(stdio_sync_filebuf::stdio_sync_filebuf): Initialize _M_unget_buf.
	(stdio_sync_filebuf::uflow): Store the returned character in
	_M_unget_buf.
	(stdio_sync_filebuf::pbackfail): If argument is eof(), pass
	_M_unget_buf to syncungetc(). Set _M_unget_buf to eof().
	(stdio_sync_filebuf<char>::xsgetn): Store last read character in
	_M_unget_buf, if any, else eof().
	(stdio_sync_filebuf<wchar_t>::xsgetn: Store last read character in
	_M_unget_buf, if any, else eof().
	* testsuite/27_io/objects/char/12048.cc: Rename to...
	* testsuite/27_io/objects/char/12048-1.cc: ...this.
	* testsuite/27_io/objects/char/12048-2.cc: New test.
	* testsuite/27_io/objects/char/12048-3.cc: New test.
	* testsuite/27_io/objects/char/12048-4.cc: New test.
	* testsuite/27_io/objects/char/12048-5.cc: New test. XFAIL.
	* testsuite/27_io/objects/wchar_t/12048-1.cc: New test.
	* testsuite/27_io/objects/wchar_t/12048-2.cc: New test.
	* testsuite/27_io/objects/wchar_t/12048-3.cc: New test.
	* testsuite/27_io/objects/wchar_t/12048-4.cc: New test.
	* testsuite/27_io/objects/wchar_t/12048-5.cc: New test. XFAIL.
	* testsuite/ext/stdio_sync_filebuf_char.cc
	(test02, test03, test04, test05): New tests.
	* testsuite/ext/stdio_sync_filebuf_wchar_t.cc
	(test02, test03, test04, test05): New tests.
	
	2003-09-03  Petur Runolfsson  <peturr02@ru.is>
	
	* docs/html/27_io/howto.html: setbuf(0, 0) has no effect on
	stringbuf or strstreambuf. Fix typos.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/ChangeLog.diff?cvsroot=gcc&r1=1.1948&r2=1.1949
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/docs/html/27_io/howto.html.diff?cvsroot=gcc&r1=1.26&r2=1.27
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/include/ext/stdio_sync_filebuf.h.diff?cvsroot=gcc&r1=1.3&r2=1.4
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/testsuite/ext/stdio_sync_filebuf_char.cc.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/testsuite/ext/stdio_sync_filebuf_wchar_t.cc.diff?cvsroot=gcc&r1=1.1&r2=1.2