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According to 5.9 para 2 (second bullet) for pointers p...

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2003-04-18  Paolo Carlini  <pcarlini@unitus.it>

	According to 5.9 para 2 (second bullet) for pointers p, q
	pointing to the same type, with  p == 0 and q == 0, (p < q)
	is false.
	* include/bits/fstream.tcc (close, overflow, _M_really_overflow,
	seekoff): Remove redundant NULL pointer checks from tests
	involving _M_out_* and _M_in_*, const qualify bool variables.
	(showmanyc, pbackfail, _M_convert_to_external, imbue): Const
	qualify bool variables.
	* include/bits/streambuf.tcc (sbumpc, sputbackc, sungetc, sputc):
	Remove redundant NULL pointer checks from tests involving
	_M_out_* and _M_in_*, const qualify bool variables.
	* include/std/std_fstream.h (sync): Likewise.
	(_M_is_indeterminate): Const qualify bool variables.
	* include/std/std_streambuf.h (sgetc, uflow): Remove redundant
	NULL pointer checks from tests involving _M_out_* and _M_in_*,
	const qualify bool variables.
	(_M_in_cur_move, _M_out_cur_move, uflow): Const qualify bool
	variables.

From-SVN: r65783
This commit is contained in:
Paolo Carlini 2003-04-18 15:55:22 +02:00 committed by Paolo Carlini
parent c553b7026a
commit 0b176c1af2
5 changed files with 59 additions and 41 deletions
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21
libstdc++-v3/ChangeLog
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@ -1,3 +1,24 @@
2003-04-18 Paolo Carlini <pcarlini@unitus.it>
According to 5.9 para 2 (second bullet) for pointers p, q
pointing to the same type, with p == 0 and q == 0, (p < q)
is false.
* include/bits/fstream.tcc (close, overflow, _M_really_overflow,
seekoff): Remove redundant NULL pointer checks from tests
involving _M_out_* and _M_in_*, const qualify bool variables.
(showmanyc, pbackfail, _M_convert_to_external, imbue): Const
qualify bool variables.
* include/bits/streambuf.tcc (sbumpc, sputbackc, sungetc, sputc):
Remove redundant NULL pointer checks from tests involving
_M_out_* and _M_in_*, const qualify bool variables.
* include/std/std_fstream.h (sync): Likewise.
(_M_is_indeterminate): Const qualify bool variables.
* include/std/std_streambuf.h (sgetc, uflow): Remove redundant
NULL pointer checks from tests involving _M_out_* and _M_in_*,
const qualify bool variables.
(_M_in_cur_move, _M_out_cur_move, uflow): Const qualify bool
variables.
2003-04-18 Loren J. Rittle <ljrittle@acm.org>
* include/c_std/std_cmath.h (C99 FP capture): Only undefine said

47
libstdc++-v3/include/bits/fstream.tcc
View File

@ -116,8 +116,8 @@ namespace std
{
bool __testfail = false;
const int_type __eof = traits_type::eof();
bool __testput = this->_M_out_cur
&& this->_M_out_beg < this->_M_out_lim;
const bool __testput = this->_M_out_beg < this->_M_out_lim;
if (__testput
&& traits_type::eq_int_type(_M_really_overflow(__eof), __eof))
__testfail = true;
@ -152,11 +152,11 @@ namespace std
showmanyc()
{
streamsize __ret = -1;
bool __testin = this->_M_mode & ios_base::in;
const bool __testin = this->_M_mode & ios_base::in;
const locale __loc = this->getloc();
const __codecvt_type& __cvt = use_facet<__codecvt_type>(__loc);
// Sync with stdio.
bool __sync = this->_M_buf_size <= 1;
const bool __sync = this->_M_buf_size <= 1;
if (__testin && this->is_open())
{
@ -178,18 +178,18 @@ namespace std
pbackfail(int_type __i)
{
int_type __ret = traits_type::eof();
bool __testin = this->_M_mode & ios_base::in;
const bool __testin = this->_M_mode & ios_base::in;
if (__testin)
{
bool __testpb = this->_M_in_beg < this->_M_in_cur;
const bool __testpb = this->_M_in_beg < this->_M_in_cur;
char_type __c = traits_type::to_char_type(__i);
bool __testeof = traits_type::eq_int_type(__i, __ret);
const bool __testeof = traits_type::eq_int_type(__i, __ret);
if (__testpb)
{
bool __testout = this->_M_mode & ios_base::out;
bool __testeq = traits_type::eq(__c, this->gptr()[-1]);
const bool __testout = this->_M_mode & ios_base::out;
const bool __testeq = traits_type::eq(__c, this->gptr()[-1]);
// Try to put back __c into input sequence in one of three ways.
// Order these tests done in is unspecified by the standard.
@ -251,9 +251,8 @@ namespace std
overflow(int_type __c)
{
int_type __ret = traits_type::eof();
bool __testput =
this->_M_out_cur && this->_M_out_cur < this->_M_out_end;
bool __testout = this->_M_mode & ios_base::out;
const bool __testput = this->_M_out_cur < this->_M_out_end;
const bool __testout = this->_M_mode & ios_base::out;
if (__testout)
{
@ -282,7 +281,7 @@ namespace std
const locale __loc = this->getloc();
const __codecvt_type& __cvt = use_facet<__codecvt_type>(__loc);
// Sync with stdio.
bool __sync = this->_M_buf_size <= 1;
const bool __sync = this->_M_buf_size <= 1;
if (__cvt.always_noconv() && __ilen)
{
@ -352,10 +351,10 @@ namespace std
_M_really_overflow(int_type __c)
{
int_type __ret = traits_type::eof();
bool __testput = this->_M_out_cur && this->_M_out_beg < this->_M_out_lim;
bool __testunbuffered = _M_file.is_open() && !this->_M_buf_size;
const bool __testput = this->_M_out_beg < this->_M_out_lim;
const bool __testunbuffered = _M_file.is_open() && !this->_M_buf_size;
// Sync with stdio.
bool __sync = this->_M_buf_size <= 1;
const bool __sync = this->_M_buf_size <= 1;
if (__testput || __testunbuffered)
{
@ -440,16 +439,16 @@ namespace std
seekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __mode)
{
pos_type __ret = pos_type(off_type(-1));
bool __testin = (ios_base::in & this->_M_mode & __mode) != 0;
bool __testout = (ios_base::out & this->_M_mode & __mode) != 0;
const bool __testin = (ios_base::in & this->_M_mode & __mode) != 0;
const bool __testout = (ios_base::out & this->_M_mode & __mode) != 0;
// Sync with stdio.
bool __sync = this->_M_buf_size <= 1;
const bool __sync = this->_M_buf_size <= 1;
// Should probably do has_facet checks here.
int __width = use_facet<__codecvt_type>(this->_M_buf_locale).encoding();
if (__width < 0)
__width = 0;
bool __testfail = __off != 0 && __width <= 0;
const bool __testfail = __off != 0 && __width <= 0;
if (this->is_open() && !__testfail && (__testin || __testout))
{
@ -460,10 +459,8 @@ namespace std
{
off_type __computed_off = __width * __off;
bool __testget = this->_M_in_cur
&& this->_M_in_beg < this->_M_in_end;
bool __testput = this->_M_out_cur
&& this->_M_out_beg < this->_M_out_lim;
const bool __testget = this->_M_in_beg < this->_M_in_end;
const bool __testput = this->_M_out_beg < this->_M_out_lim;
// Sync the internal and external streams.
// out
if (__testput || _M_last_overflowed)
@ -523,7 +520,7 @@ namespace std
basic_filebuf<_CharT, _Traits>::
imbue(const locale& __loc)
{
bool __testbeg = gptr() == eback() && pptr() == pbase();
const bool __testbeg = gptr() == eback() && pptr() == pbase();
if (__testbeg && this->_M_buf_locale != __loc)
this->_M_buf_locale = __loc;

8
libstdc++-v3/include/bits/streambuf.tcc
View File

@ -49,7 +49,7 @@ namespace std
sbumpc()
{
int_type __ret;
if (_M_in_cur && _M_in_cur < _M_in_end)
if (_M_in_cur < _M_in_end)
{
char_type __c = *(this->gptr());
_M_in_cur_move(1);
@ -66,7 +66,7 @@ namespace std
sputbackc(char_type __c)
{
int_type __ret;
bool __testpos = _M_in_cur && _M_in_beg < _M_in_cur;
const bool __testpos = _M_in_beg < _M_in_cur;
if (!__testpos || !traits_type::eq(__c, this->gptr()[-1]))
__ret = this->pbackfail(traits_type::to_int_type(__c));
else
@ -83,7 +83,7 @@ namespace std
sungetc()
{
int_type __ret;
if (_M_in_cur && _M_in_beg < _M_in_cur)
if (_M_in_beg < _M_in_cur)
{
_M_in_cur_move(-1);
__ret = traits_type::to_int_type(*_M_in_cur);
@ -99,7 +99,7 @@ namespace std
sputc(char_type __c)
{
int_type __ret;
if (_M_out_cur && _M_out_cur < _M_out_end)
if (_M_out_cur < _M_out_end)
{
*_M_out_cur = __c;
_M_out_cur_move(1);

13
libstdc++-v3/include/std/std_fstream.h
View File

@ -312,10 +312,9 @@ namespace std
sync()
{
int __ret = 0;
bool __testput = this->_M_out_cur
&& this->_M_out_beg < this->_M_out_lim;
const bool __testput = this->_M_out_beg < this->_M_out_lim;
// Sync with stdio.
bool __sync = this->_M_buf_size <= 1;
const bool __sync = this->_M_buf_size <= 1;
// Make sure that the internal buffer resyncs its idea of
// the file position with the external file.
@ -404,8 +403,8 @@ namespace std
void
_M_set_determinate(off_type __off)
{
bool __testin = this->_M_mode & ios_base::in;
bool __testout = this->_M_mode & ios_base::out;
const bool __testin = this->_M_mode & ios_base::in;
const bool __testout = this->_M_mode & ios_base::out;
if (__testin)
this->setg(this->_M_buf, this->_M_buf, this->_M_buf + __off);
if (__testout)
@ -424,8 +423,8 @@ namespace std
bool
_M_is_indeterminate(void)
{
bool __testin = this->_M_mode & ios_base::in;
bool __testout = this->_M_mode & ios_base::out;
const bool __testin = this->_M_mode & ios_base::in;
const bool __testout = this->_M_mode & ios_base::out;
bool __ret = false;
// Don't return true if unbuffered.
if (this->_M_buf)

11
libstdc++-v3/include/std/std_streambuf.h
View File

@ -303,7 +303,7 @@ namespace std
void
_M_in_cur_move(off_type __n) // argument needs to be +-
{
bool __testout = _M_out_cur;
const bool __testout = _M_out_cur;
_M_in_cur += __n;
if (__testout && _M_buf_unified)
_M_out_cur += __n;
@ -320,7 +320,7 @@ namespace std
void
_M_out_cur_move(off_type __n) // argument needs to be +-
{
bool __testin = _M_in_cur;
const bool __testin = _M_in_cur;
_M_out_cur += __n;
if (__testin && _M_buf_unified)
@ -453,7 +453,7 @@ namespace std
sgetc()
{
int_type __ret;
if (_M_in_cur && _M_in_cur < _M_in_end)
if (_M_in_cur < _M_in_end)
__ret = traits_type::to_int_type(*(this->gptr()));
else
__ret = this->underflow();
@ -787,8 +787,9 @@ namespace std
uflow()
{
int_type __ret = traits_type::eof();
bool __testeof = traits_type::eq_int_type(this->underflow(), __ret);
bool __testpending = _M_in_cur && _M_in_cur < _M_in_end;
const bool __testeof =
traits_type::eq_int_type(this->underflow(), __ret);
const bool __testpending = _M_in_cur < _M_in_end;
if (!__testeof && __testpending)
{
__ret = traits_type::to_int_type(*_M_in_cur);