illegal indirection

[jacobjz]

so i get this error :/

[gregmarr]

What release/commit are you using?

[jacobjz]

version 2.1.1

[gregmarr]

That's very strange. This is line 1136 in that release:

       result["url"] = "https://github.com/nlohmann/json";

What is line 1136 in your json.hpp?

[nlohmann]

Could you remove all headers but json.hpp and have your main just consist of json j;?

[jacobjz]

I've downloader version 2.0.5 and it works. :)

[nlohmann]

That's strange. Which version of MSVC is this?

[jacobjz]

2015. Btw can i make an object of any class with this repository? I'm trying to send an object from Java to C++.

[nlohmann]

As of version 2.1.0, you can convert any type from/to JSON, see https://github.com/nlohmann/json#arbitrary-types-conversions.

MSVC 2015 is supported, and we use it with AppVeyor, see https://github.com/nlohmann/json#supported-compilers.

[jacobjz]

Ok, i'll post the piece of code where this error occurs tonight and chceck AppVeyor as well:)

[nlohmann]

Any news here?

[tatjam]

Hmm I'm having the same issue (latest version, got it directly from the file in the repo). Seems to be happening in this line static constexpr T value{};, line 1136.

[tatjam]

Also seems to happen on version 2.1.0, but no issues on version 2.0.10

Will try g++ with the 3 versions and see if there is any issue, reporting soon!

2.0.10 : No issues on g++. No issues on Visual Studio
2.1.0: No issues on g++. Illegal indirection on Visual Studio
2.1.1 No issues on g++. Illegal indirection on Visual Studio

I don't have Visual Studio 2017 so won't be able to test with it

[nlohmann]

Could you please tell me the exact versions of your MSVC. The library is known to work with the following versions:

• Visual Studio 14 2015, Microsoft (R) Build Engine version 14.0.25123.0 (and probably later)
• Visual Studio 2017, Microsoft (R) Build Engine version 15.1.548.43366 (and probably later)

These exact versions are used by AppVeyor where the test suite can be compiled and executed without errors.

[tatjam]

EDIT: Nevermind that's is not the version my bad... How can i get the version?

[nlohmann]

In Visual Studio, the Tab 'Help'-> 'About Microsoft Visual Studio' should give you the desired infos. (from http://stackoverflow.com/a/5089489/266378).

[nlohmann]

Any news on this?

[tatjam]

Version 14.0.24720.00 Update 1

Indeed that's older than what you use, I suppose they had no full support for contextpr?

[nlohmann]

Right. Sorry, but we can't do anything about that.

[cfogelklou]

I'm getting this error in MSVC2017, same line - 1136, so definitely newer than MSVC2015. Not sure if it should be closed?

[nlohmann]

Hi @cfogelklou, what is the exact version you are using?

We are using Microsoft (R) Build Engine version 15.1.548.43366 with AppVeyor, see https://ci.appveyor.com/project/nlohmann/json/build/1932 for the latest build which succeeds on MSVC 2017 as well.

[xgdgsc]

I also get this with VS2015 Version 14.0.24720.00 Update 1. I will update to see.

[nlohmann]

I think this version is not supported. The code is known to run with Microsoft Visual C++ 2015 / Build Tools 14.0.25123.0 (and possibly later), see https://github.com/nlohmann/json#supported-compilers.