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https://issues.apache.org/jira/browse/STDCXX-171?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Sebor updated STDCXX-171:
--------------------------------
Severity: Usability
Fix Version/s: 4.2.2
Remaining Estimate: 2h
Original Estimate: 2h
Summary: [LWG #538] std::unique_copy() requires
CopyConstructible and Assignable (was: std::unique_copy() requires
CopyConstructible and Assignable)
Issue [538|http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#538]
has now been incorporated into the Working Paper so we should be able to
dispose of this. Scheduled for 4.2.2.
> [LWG #538] std::unique_copy() requires CopyConstructible and Assignable
> -----------------------------------------------------------------------
>
> Key: STDCXX-171
> URL: https://issues.apache.org/jira/browse/STDCXX-171
> Project: C++ Standard Library
> Issue Type: Bug
> Components: 25. Algorithms
> Affects Versions: 4.1.3
> Environment: all
> Reporter: Anton Pevtsov
> Priority: Minor
> Fix For: 4.2.2
>
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> The following test fails to compile:
> #include <algorithm>
> #include <iterator>
> #include <iostream>
> struct no_assign {
> int const x;
> no_assign() : x(23) { }
> operator int() const { return x; }
> };
> // this program should output a single "23".
> int main()
> {
> no_assign in[4];
> std::unique_copy(in, in+4, std::ostream_iterator<int>(std::cout, "\n"));
> }
> The unique_copy standard requirements are still discussed:
> http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#241
> http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-active.html#538
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