My error in rapidjson

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Hi,
I used rapidjson in my MFC VC++ project to parse and create some json strings.
But I have an error in document.h file :

new (this) GenericValue(i);

error is:

document.h(1739): error C2059: syntax error: 'this'

I don't know how resolve this problem.
please help me.

What I have tried:

document.h(1739): error C2059: syntax error: 'this'

rapidjson helping

Posted 15-Dec-17 1:40am

Updated 15-Dec-17 2:19am

1 solution

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Jochen Arndt · Accepted Answer · 2017-12-15T02:19:00

Full code line in header:

C++

GenericValue& SetInt(int i) { this->~GenericValue(); new (this) GenericValue(i); return *this; }

The technique is called "placement new".

It seems to be a Visual Studio problem:

Make DEBUG_NEW work with placement new – Visual Studio[^]:
If DEBUG_NEW is defined in stdafx.h then code that uses placement new will not compile.

So try undefining that before including the header file or make a release build.