是否可以使用operator new和initialiser语法初始化非POD数组?

Luk*_*rth 9 c++ arrays clang initializer-list c++11

我刚刚阅读并了解是否可以使用new运算符初始化C++ 11中的数组,但它并没有完全解决我的问题.

这段代码在Clang中给出了一个编译错误:

struct A
{
   A(int first, int second) {}
};
void myFunc()
{
   new A[1] {{1, 2}};
}
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我期望{{1,2}}使用单个元素初始化数组,然后使用构造函数args {1,2}初始化,但是我收到此错误:

error: no matching constructor for initialization of 'A'
   new A[1] {{1, 2}};
            ^
note: candidate constructor not viable: requires 2 arguments, but 0 were provided
   A(int first, int second) {}
   ^
note: candidate constructor (the implicit copy constructor) not viable: requires 1 argument, but 0 were provided
struct A
       ^
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为什么这种语法不起作用?

dyp*_*dyp 12

这似乎是clang ++ bug 15735.声明一个默认构造函数(使其可访问而不是删除)并编译程序,即使未调用默认构造函数:

#include <iostream>

struct A
{
   A() { std::cout << "huh?\n"; } // or without definition, linker won't complain
   A(int first, int second) { std::cout << "works fine?\n"; }
};
int main()
{
   new A[1] {{1, 2}};
}
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实例

g ++ 4.9也接受OP的程序而不做任何修改.