CODEWITHSUNDEEP
c++placement-new
Serguei Fedorov
Serguei Fedorov

Reputation: 7923

'operator new' : function does not take 2 arguments

I cannot seem to get my placement new to work for some reason. Based on this question, I have set this up correctly.

However, I continue to get the error:

'operator new' : function does not take 2 arguments

Here is my code:

char * p = new char [sizeof(Node) * 5];
Node* node = new(p) Node();

where Node is a linked list node. I have tried to simplify this down based on the other stack overflow question, and I am still getting the same error:

char *buf  = new char[sizeof(int)]; // pre-allocated buffer
int *p = new (buf) int;

Does anyone know why I am having this issue?

Any help is greatly appreciated!

PS, this works:

Node* node = new Node();

Upvotes: 17

Views: 6769

Answers (1)

Mike Seymour
Mike Seymour

Reputation: 254471

Most likely, you didn't include <new>. You need that for the declarations of the standard forms of placement-new.

Upvotes: 37

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