Ambiguous compare operators with clang-5.0

[pboettch]

This code:

msg["level"] = -80;
if (msg["level"] < -115) {
    ////
}

Gives me a bunch of

error: use of overloaded operator '>=' is ambiguous (with operand types 'int' and 'const value_type' (aka 'const nlohmann::basic_json<std::map, std::vector, std::__cxx11::basic_string<char>, bool, long, unsigned long, double, std::allocator, adl_serializer>'))

errors when using clang-5.0 (5.0.0-svn294894-1) . Where with gcc 6.3 everything is fine, no moaning.

I know that this version of clang is from the dev-tree (iiuc), but I'm creating this issue to see whether there is something to be done here or on clang's side?

(I'm using 2.1.1 of this library).

[nlohmann]

Could this be a duplicate of #512?

[pboettch]

It is. Sorry for not checking the existing issues.

[nlohmann]

No problem, thanks for reporting anyway! I unfortunately did not find the time to fix it. I'm using Clang 5 myself, but did not run into this issue myself.

[nlohmann]

Fixed, see #512.