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Posted to dev@stdcxx.apache.org by "Martin Sebor (JIRA)" <ji...@apache.org> on 2007/08/26 23:19:30 UTC
[jira] Commented: (STDCXX-235) std::vector::iterators not
symmetric
[ https://issues.apache.org/jira/browse/STDCXX-235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12522889 ]
Martin Sebor commented on STDCXX-235:
-------------------------------------
The test case below passes with gcc 4.1, bot with and without debugging iterators:
$ cat t.cpp && make t && rm t && make t CPPOPTS=-D_RWSTD_NO_DEBUG_ITER
#include <cassert>
#include <vector>
int main ()
{
std::vector<bool> v;
typedef std::vector<bool>::const_iterator const_iterator;
typedef std::vector<bool>::iterator iterator;
const const_iterator cbegin = v.begin ();
const iterator begin = v.begin ();
assert (cbegin == begin);
assert (begin == cbegin);
assert (!(cbegin == begin));
assert (!(begin == cbegin));
assert (cbegin <= begin);
assert (begin <= cbegin);
assert (cbegin >= begin);
assert (begin >= cbegin);
assert (!(cbegin < begin));
assert (!(begin < cbegin));
assert (!(cbegin > begin));
assert (!(begin > cbegin));
}
gcc -pedantic -nostdinc++ -g -W -Wall -Wcast-qual -Winline -Wshadow -Wwrite-strings -Wno-long-long -Wcast-align -I/home/sebor/stdcxx/include/ansi -D_RWSTDDEBUG -pthread -I/home/sebor/stdcxx/include -I/build/sebor/stdcxx-gcc-4.1.1-15D/include -I/home/sebor/stdcxx/examples/include -pthread -L/build/sebor/stdcxx-gcc-4.1.1-15D/lib -Wl,-R/build/sebor/stdcxx-gcc-4.1.1-15D/lib t.cpp -lstd15D -lsupc++ -lm -o t
gcc -pedantic -nostdinc++ -g -W -Wall -Wcast-qual -Winline -Wshadow -Wwrite-strings -Wno-long-long -Wcast-align -I/home/sebor/stdcxx/include/ansi -D_RWSTDDEBUG -pthread -I/home/sebor/stdcxx/include -I/build/sebor/stdcxx-gcc-4.1.1-15D/include -I/home/sebor/stdcxx/examples/include -D_RWSTD_NO_DEBUG_ITER -pthread -L/build/sebor/stdcxx-gcc-4.1.1-15D/lib -Wl,-R/build/sebor/stdcxx-gcc-4.1.1-15D/lib t.cpp -lstd15D -lsupc++ -lm -o t
> std::vector<bool>::iterators not symmetric
> ------------------------------------------
>
> Key: STDCXX-235
> URL: https://issues.apache.org/jira/browse/STDCXX-235
> Project: C++ Standard Library
> Issue Type: Bug
> Components: 23. Containers
> Environment: all
> Reporter: Martin Sebor
>
> Moved from the Rogue Wave bug tracking database:
> ****Created By: sebor @ Jun 27, 2000 01:05:10 PM****
> Chichiang Wan wrote:
> >
> > Chichiang Wan wrote:
> > >
> > > Martin,
> > >
> > > Iterator relation operator support is missing for vector<bool>. Is
> > > there a reason for that?
> > >
> >
> > I mean for mixing iterator and const_iterator.
> Well, getting the iterators working was quite a bit of work and we just ran out of time. (Also, given the chaos surrounding vector<bool> in general I didn't consider it as important as all the others.) I would recommend users to not use the class (#define _RWSTD_NO_VECTOR_BOOL). We will probably eventually rewrite vector<bool> and the iterators but I don't think it will happen anytime soon. I created incident #23164.
> Martin
> >
> > -- Chichiang
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