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Re: C++11 N2256 vector::insert at const_iterator
- From: Jonathan Wakely <jwakely dot gcc at gmail dot com>
- To: Kalle Olavi Niemitalo <kon at iki dot fi>
- Cc: gcc-help at gcc dot gnu dot org
- Date: Thu, 1 Mar 2012 23:26:45 +0000
- Subject: Re: C++11 N2256 vector::insert at const_iterator
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On 1 March 2012 21:04, Kalle Olavi Niemitalo wrote:
> In 2007, there was a proposal to change the insert and erase
> functions of std::vector so that the location in the vector can
> be given as a const_iterator, rather than requiring a non-const
> iterator.
> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2256.html
> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2350.pdf
>
> I don't have the final C++11 standard but it seems this change
> was accepted.
> http://gcc.gnu.org/onlinedocs/libstdc++/ext/lwg-defects.html#180
> http://en.cppreference.com/w/cpp/container/vector/insert
> http://msdn.microsoft.com/en-us/library/s5bta5ha%28v=vs.110%29.aspx
>
> In libstdc++ of GCC though, insert requires a non-const iterator,
> whether or not __GXX_EXPERIMENTAL_CXX0X__ is defined.
> http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/include/bits/stl_vector.h?revision=181189&view=markup#l970
>
> PR libstdc++/44436 mentions const_iterator in insert and erase,
> but it is about associative containers, so I don't think it
> covers std::vector.
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44436#c9
>
> Is this omission already covered by some line in the "C++ 2011
> Implementation Status" table?
> http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#status.iso.200x
No, it's not listed as missing in the status table, but should be.