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From: "ed at catmur dot uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/106074] Spurious Wstringop-overflow for int-to-string with SSE4
Date: Thu, 07 Jul 2022 12:16:53 +0000 [thread overview]
Message-ID: <bug-106074-4-LjCtO4pLGc@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-106074-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106074
--- Comment #1 from Ed Catmur <ed at catmur dot uk> ---
Another example, using Date 3.0.1:
#include <date/date.h>
void f(std::istream s) {
std::chrono::system_clock::time_point tp;
date::from_stream(s, "%Y", tp);
}
https://godbolt.org/z/fscqTd947
In file included from
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_pair.h:61,
from
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:64,
from
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/algorithm:60,
from
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:44,
from <source>:1:
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{char&, const char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
CharT, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{int&, char&, const char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6474:9:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, CharT, Args&& ...)
[with CharT = char; Traits = std::char_traits<char>; Args = {int&, char&, const
char&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 19 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [3, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 19 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{char&, const char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
CharT, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{int&, char&, const char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6474:9:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, CharT, Args&& ...)
[with CharT = char; Traits = std::char_traits<char>; Args = {int&, char&, const
char&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 20 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [4, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 20 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{char&, const char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
CharT, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{int&, char&, const char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6474:9:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, CharT, Args&& ...)
[with CharT = char; Traits = std::char_traits<char>; Args = {int&, char&, const
char&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 21 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [5, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 21 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{char&, const char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
CharT, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{int&, char&, const char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6474:9:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, CharT, Args&& ...)
[with CharT = char; Traits = std::char_traits<char>; Args = {int&, char&, const
char&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 22 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [6, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 22 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{}]' at /opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{}]' at /opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6501:1,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
CharT, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{int&}]' at /opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6474:9:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, CharT, Args&& ...)
[with CharT = char; Traits = std::char_traits<char>; Args = {int&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 19 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [3, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 19 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{}]' at /opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{}]' at /opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6501:1,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
CharT, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{int&}]' at /opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6474:9:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, CharT, Args&& ...)
[with CharT = char; Traits = std::char_traits<char>; Args = {int&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 20 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [4, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 20 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{}]' at /opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{}]' at /opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6501:1,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
CharT, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{int&}]' at /opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6474:9:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, CharT, Args&& ...)
[with CharT = char; Traits = std::char_traits<char>; Args = {int&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 21 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [5, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 21 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{}]' at /opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{}]' at /opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6501:1,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
CharT, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{int&}]' at /opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6474:9:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, CharT, Args&& ...)
[with CharT = char; Traits = std::char_traits<char>; Args = {int&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 22 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [6, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 22 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{const char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, int, Args&& ...) [with
CharT = char; Traits = std::char_traits<char>; Args = {const char&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 19 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [3, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 19 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{const char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, int, Args&& ...) [with
CharT = char; Traits = std::char_traits<char>; Args = {const char&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 20 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [4, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 20 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{const char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, int, Args&& ...) [with
CharT = char; Traits = std::char_traits<char>; Args = {const char&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 21 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [5, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 21 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{const char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, int, Args&& ...) [with
CharT = char; Traits = std::char_traits<char>; Args = {const char&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 22 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [6, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 22 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, int, Args&& ...) [with
CharT = char; Traits = std::char_traits<char>; Args = {char&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 19 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [3, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 19 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, int, Args&& ...) [with
CharT = char; Traits = std::char_traits<char>; Args = {char&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 20 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [4, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 20 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, int, Args&& ...) [with
CharT = char; Traits = std::char_traits<char>; Args = {char&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 21 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [5, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 21 into destination object 'buf' of size 11
In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >,
std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&,
_Tp&) [with _Tp = char]',
inlined from 'constexpr void std::iter_swap(_ForwardIterator1,
_ForwardIterator2) [with _ForwardIterator1 = char*; _ForwardIterator2 = char*]'
at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algobase.h:182:11,
inlined from 'constexpr void std::__reverse(_RandomAccessIterator,
_RandomAccessIterator, random_access_iterator_tag) [with _RandomAccessIterator
= char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1107:18,
inlined from 'constexpr void std::reverse(_BIter, _BIter) [with _BIter =
char*]' at
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/stl_algo.h:1134:21,
inlined from 'void date::detail::read(std::basic_istream<_CharT, _Traits>&,
int, Args&& ...) [with CharT = char; Traits = std::char_traits<char>; Args =
{char&}]' at
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6513:21:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/move.h:205:11:
warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
205 | __a = _GLIBCXX_MOVE(__b);
| ^
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h: In function 'void
date::detail::read(std::basic_istream<_CharT, _Traits>&, int, Args&& ...) [with
CharT = char; Traits = std::char_traits<char>; Args = {char&}]':
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 22 into destination object 'buf' of size 11
6506 | CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
| ^~~
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset [6, 11] into destination object 'buf' of size 11
/opt/compiler-explorer/libs/date/v3.0.1/include/date/date.h:6506:15: note: at
offset 22 into destination object 'buf' of size 11
next prev parent reply other threads:[~2022-07-07 12:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-24 8:59 [Bug c++/106074] New: " ed at catmur dot uk
2022-07-07 12:16 ` ed at catmur dot uk [this message]
2023-05-18 3:58 ` [Bug tree-optimization/106074] " pinskia at gcc dot gnu.org
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