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re PR libstdc++/58338 (Add noexcept to functions with a narrow contract)

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2013-09-24  Marc Glisse  <marc.glisse@inria.fr>

	PR libstdc++/58338
	PR libstdc++/56166
	* include/bits/basic_string.h (basic_string)
	[basic_string(basic_string&&)]: Make the noexcept conditional.
	[operator=(basic_string&&), assign(basic_string&&)]: Link to PR 58265.
	[begin(), end(), rbegin(), rend(), clear]: Remove noexcept.
	[pop_back]: Comment on the lack of noexcept.
	* include/debug/string (basic_string) [basic_string(const _Allocator&),
	basic_string(basic_string&&), begin(), end(), rbegin(), rend(), clear,
	operator[](size_type), pop_back]: Comment out noexcept, until vstring
	replaces basic_string.

From-SVN: r202861
This commit is contained in:
Marc Glisse 2013-09-24 12:07:32 +02:00 committed by Marc Glisse
parent fae205619d
commit 63ebd8f129
3 changed files with 35 additions and 16 deletions
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14
libstdc++-v3/ChangeLog
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@ -1,3 +1,17 @@
2013-09-24 Marc Glisse <marc.glisse@inria.fr>
PR libstdc++/58338
PR libstdc++/56166
* include/bits/basic_string.h (basic_string)
[basic_string(basic_string&&)]: Make the noexcept conditional.
[operator=(basic_string&&), assign(basic_string&&)]: Link to PR 58265.
[begin(), end(), rbegin(), rend(), clear]: Remove noexcept.
[pop_back]: Comment on the lack of noexcept.
* include/debug/string (basic_string) [basic_string(const _Allocator&),
basic_string(basic_string&&), begin(), end(), rbegin(), rend(), clear,
operator[](size_type), pop_back]: Comment out noexcept, until vstring
replaces basic_string.
2013-09-24 Tim Shen <timshen91@gmail.com>
* include/Makefile.am: Add regex.tcc.

19
libstdc++-v3/include/bits/basic_string.h
View File

@ -509,7 +509,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
* The newly-created string contains the exact contents of @a __str.
* @a __str is a valid, but unspecified string.
**/
basic_string(basic_string&& __str) noexcept
basic_string(basic_string&& __str)
#if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
noexcept // FIXME C++11: should always be noexcept.
#endif
: _M_dataplus(__str._M_dataplus)
{
#if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
@ -581,6 +584,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
* The contents of @a str are moved into this string (without copying).
* @a str is a valid, but unspecified string.
**/
// PR 58265, this should be noexcept.
basic_string&
operator=(basic_string&& __str)
{
@ -607,7 +611,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
* the %string. Unshares the string.
*/
iterator
begin() _GLIBCXX_NOEXCEPT
begin() // FIXME C++11: should be noexcept.
{
_M_leak();
return iterator(_M_data());
@ -626,7 +630,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
* character in the %string. Unshares the string.
*/
iterator
end() _GLIBCXX_NOEXCEPT
end() // FIXME C++11: should be noexcept.
{
_M_leak();
return iterator(_M_data() + this->size());
@ -646,7 +650,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
* order. Unshares the string.
*/
reverse_iterator
rbegin() _GLIBCXX_NOEXCEPT
rbegin() // FIXME C++11: should be noexcept.
{ return reverse_iterator(this->end()); }
/**
@ -664,7 +668,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
* element order. Unshares the string.
*/
reverse_iterator
rend() _GLIBCXX_NOEXCEPT
rend() // FIXME C++11: should be noexcept.
{ return reverse_iterator(this->begin()); }
/**
@ -806,7 +810,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
*/
// PR 56166: this should not throw.
void
clear() _GLIBCXX_NOEXCEPT
clear()
{ _M_mutate(0, this->size(), 0); }
/**
@ -1088,6 +1092,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
* This function sets this string to the exact contents of @a __str.
* @a __str is a valid, but unspecified string.
*/
// PR 58265, this should be noexcept.
basic_string&
assign(basic_string&& __str)
{
@ -1417,7 +1422,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
* The string must be non-empty.
*/
void
pop_back()
pop_back() // FIXME C++11: should be noexcept.
{ erase(size()-1, 1); }
#endif // C++11

18
libstdc++-v3/include/debug/string
View File

@ -70,7 +70,7 @@ namespace __gnu_debug
// 21.3.1 construct/copy/destroy:
explicit basic_string(const _Allocator& __a = _Allocator())
_GLIBCXX_NOEXCEPT
// _GLIBCXX_NOEXCEPT
: _Base(__a)
{ }
@ -114,7 +114,7 @@ namespace __gnu_debug
{ }
#if __cplusplus >= 201103L
basic_string(basic_string&& __str) noexcept
basic_string(basic_string&& __str) // noexcept
: _Base(std::move(__str))
{ }
@ -172,7 +172,7 @@ namespace __gnu_debug
// 21.3.2 iterators:
iterator
begin() _GLIBCXX_NOEXCEPT
begin() // _GLIBCXX_NOEXCEPT
{ return iterator(_Base::begin(), this); }
const_iterator
@ -180,7 +180,7 @@ namespace __gnu_debug
{ return const_iterator(_Base::begin(), this); }
iterator
end() _GLIBCXX_NOEXCEPT
end() // _GLIBCXX_NOEXCEPT
{ return iterator(_Base::end(), this); }
const_iterator
@ -188,7 +188,7 @@ namespace __gnu_debug
{ return const_iterator(_Base::end(), this); }
reverse_iterator
rbegin() _GLIBCXX_NOEXCEPT
rbegin() // _GLIBCXX_NOEXCEPT
{ return reverse_iterator(end()); }
const_reverse_iterator
@ -196,7 +196,7 @@ namespace __gnu_debug
{ return const_reverse_iterator(end()); }
reverse_iterator
rend() _GLIBCXX_NOEXCEPT
rend() // _GLIBCXX_NOEXCEPT
{ return reverse_iterator(begin()); }
const_reverse_iterator
@ -258,7 +258,7 @@ namespace __gnu_debug
using _Base::reserve;
void
clear() _GLIBCXX_NOEXCEPT
clear() // _GLIBCXX_NOEXCEPT
{
_Base::clear();
this->_M_invalidate_all();
@ -279,7 +279,7 @@ namespace __gnu_debug
}
reference
operator[](size_type __pos) _GLIBCXX_NOEXCEPT
operator[](size_type __pos) // _GLIBCXX_NOEXCEPT
{
#ifdef _GLIBCXX_DEBUG_PEDANTIC
__glibcxx_check_subscript(__pos);
@ -583,7 +583,7 @@ namespace __gnu_debug
#if __cplusplus >= 201103L
void
pop_back() noexcept
pop_back() // noexcept
{
__glibcxx_check_nonempty();
_Base::pop_back();