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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - result of passing an array of unknown bound to is_destructible is wrong"
href="http://llvm.org/bugs/show_bug.cgi?id=16839">16839</a>
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<th>Summary</th>
<td>result of passing an array of unknown bound to is_destructible is wrong
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<th>Product</th>
<td>libc++
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>All Bugs
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<th>Assignee</th>
<td>hhinnant@apple.com
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<th>Reporter</th>
<td>y121516@gmail.com
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</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>Testing code is as follows:
#include<type_traits>
static_assert(std::is_destructible<int[]>::value == false, "");
int main(){};
compile error message is as follow:
prog.cc:2:1: error: static_assert failed ""
static_assert(std::is_destructible<int[]>::value == false, "");
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
On the other hand Standard (§ 20.9.4.3 Table 49 — Type property predicates)
says:
Template
template <class T>
struct is_destructible;
Condition
For a complete type T and
given
template <class U>
struct test { U u; };,
test<T>::˜test() is not
deleted.
Preconditions
T shall be a complete type,
(possibly cv-qualified)
void, or an array of
unknown bound.
An array of unknown bound is incomplete type (§ 3.9).
So, I think that std::is_destructible<int[]> should be derived from false_type.</pre>
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