https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96382
Bug ID: 96382
Summary: const_reverse_iterator() ctor is rejected in c++98
Product: gcc
Version: 10.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: slyfox at gcc dot gnu.org
CC: jwakely at redhat dot com
Target Milestone: ---
Original build failure is found on re2c-2.0 project. Minimal failing example:
$ cat a.cc
#include <vector>
// g++-10.2.0 -c a.cc -std=c++98:
// ok
//
// g++-11.0.0 -c a.cc -std=c++98:
// ': current(__x.current) { } is protected within this context'
bool f(void) {
std::vector<int> v;
std::vector<int>::const_reverse_iterator ri = v.rbegin();
return ri != v.rend();
}
$ LANG=C g++-11.0.0 -c a.cc -std=c++98
In file included from
/usr/lib/gcc/x86_64-pc-linux-gnu/11.0.0/include/g++-v11/bits/stl_algobase.h:67,
from
/usr/lib/gcc/x86_64-pc-linux-gnu/11.0.0/include/g++-v11/vector:60,
from a.cc:1:
/usr/lib/gcc/x86_64-pc-linux-gnu/11.0.0/include/g++-v11/bits/stl_iterator.h: In
instantiation of 'std::reverse_iterator<_Iterator>::reverse_iterator(const
std::reverse_iterator<_Iter>&) [with _Iter = __gnu_cxx::__normal_iterator<int*,
std::vector<int> >; _Iterator = __gnu_cxx::__normal_iterator<const int*,
std::vector<int> >]':
a.cc:11:60: required from here
/usr/lib/gcc/x86_64-pc-linux-gnu/11.0.0/include/g++-v11/bits/stl_iterator.h:203:23:
error: '__gnu_cxx::__normal_iterator<int*, std::vector<int> >
std::reverse_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int> >
>::current' is protected within this context
203 | : current(__x.current) { }
| ~~~~^~~~~~~
/usr/lib/gcc/x86_64-pc-linux-gnu/11.0.0/include/g++-v11/bits/stl_iterator.h:146:17:
note: declared protected here
146 | _Iterator current;
| ^~~~~~~
$ LANG=C g++-10.2.0 -c a.cc -std=c++98
Probably started at
https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=a5a8a4e61565a2a66391e29eb80813c581b7dc52
