id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
13533,Boost vector resize causes assert(false),Paul Calabrese <calabrese_p@…>,Ion Gaztañaga,"
When using a boost vector with a custom allocator, a resize that results in memory growth in both directions causes an assert(false) in insert_value_initialized_n_proxy::copy_n_and_update(). The code in question is contained in boost/containers/detail/advanced_insert_int.hpp.

I have attached a test case that results in an assert. The test case uses a custom allocator, but the problem was originally encountered using the boost shared memory allocator.

The following patch appears to correct the behavior:
{{{
128,129c128,129
<    void copy_n_and_update(Allocator &, Iterator, size_type) const
<    {  BOOST_ASSERT(false); }
---
>    void copy_n_and_update(Allocator &a, Iterator p, size_type n) const
>    {  boost::container::uninitialized_value_init_alloc_n(a, n, p);  }
142,143c142,143
<    void copy_n_and_update(Allocator &, Iterator, size_type) const
<    {  BOOST_ASSERT(false); }
---
>    void copy_n_and_update(Allocator & a, Iterator n, size_type p) const
>    {  boost::container::uninitialized_default_init_alloc_n(a, n, p);  }
}}}",Bugs,closed,To Be Determined,container,Boost 1.67.0,Problem,fixed,,