[jira] Reopened: (STDCXX-331) std::list::insert() violates strong exception safety requirements

["Farid Zaripov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/STDCXX-331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Farid Zaripov reopened STDCXX-331:
----------------------------------


> std::list::insert() violates strong exception safety requirements
> -----------------------------------------------------------------
>
>                 Key: STDCXX-331
>                 URL: https://issues.apache.org/jira/browse/STDCXX-331
>             Project: C++ Standard Library
>          Issue Type: Bug
>          Components: 23. Containers
>    Affects Versions: 4.1.3
>         Environment: All
>            Reporter: Farid Zaripov
>            Assignee: Farid Zaripov
>             Fix For: 4.2
>
>
> The list::insert() method do not satisfy strong exception safety requirements (23.2.3.3 Remark 1).
> Details are here:
> http://mail-archives.apache.org/mod_mbox/incubator-stdcxx-dev/200701.mbox/%3c45C0C705.8040606@kyiv.vdiweb.com%3e
> test.cpp:
> ------------------------------
> #include <list>
> #include <cassert>
> static int throw_inx = -1;
> class ListItem
> {
> public:
>     static int count_;
>     void test ()
>     {
>         if (throw_inx == count_)
>             throw count_;
>         ++count_;
>     }
>     ListItem () { test (); }
>     ListItem (const ListItem&) { test (); }
>     ~ListItem () { --count_; }
> };
> int ListItem::count_ = 0;
> int main (int argc, char* argv[])
> {
>     typedef std::list<ListItem> List;
>     ListItem items [20];
>     List lst (1);
>     bool thrown = false;
>     throw_inx = 10;
>     List::iterator it = lst.begin ();
>     ListItem & ref = *it;
>     try {
>         ListItem::count_ = 0;
>         lst.insert (it, 20, items [0]);
>     } catch (...) {
>         thrown = true;
>     }
>     assert (thrown);
>     assert (it == lst.begin ());
>     assert (&ref == &*lst.begin ());
>     assert (1 == lst.size ());
>     assert (0 == ListItem::count_);
>     try {
>         ListItem::count_ = 0;
>         lst.insert (it, items, items + 20);
>     } catch (...) {
>         thrown = true;
>     }
>     assert (thrown);
>     assert (it == lst.begin ());
>     assert (&ref == &*lst.begin ());
>     assert (1 == lst.size ());
>     assert (0 == ListItem::count_);
>     return 0;
> }
> The test output:
> ------------------------------
> test: /usr/src/tests/test.cpp:48: int main(int, char**): Assertion `it == lst.begin ()' failed.
> Aborted.

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