http://llvm.org/bugs/show_bug.cgi?id=16839
Bug ID: 16839
Summary: result of passing an array of unknown bound to
is_destructible is wrong
Product: libc++
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
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.
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