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List:       apache-stdcxx-dev
Subject:    [jira] Updated: (STDCXX-331) std::list::insert() violates strong
From:       "Martin Sebor (JIRA)" <jira () apache ! org>
Date:       2007-02-28 15:54:56
Message-ID: 20001436.1172678096981.JavaMail.jira () brutus
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     [ https://issues.apache.org/jira/browse/STDCXX-331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel \
]

Martin Sebor updated STDCXX-331:
--------------------------------

    Summary: std::list::insert() violates strong exception safety requirements  (was: \
std::list::insert() method do not satisfy strong exception safety requirements)

> 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
> 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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