Construction in a member initializer list using curly braces is set as 'array'

[kyeonghopark]

• What is the issue you have?
  The type of json object is set as 'array' in a constructor of an inherited class.

• Please describe the steps to reproduce the issue. Can you provide a small but working code example?

class child : public nlohmann::json {
 public:
  explicit child(const nlohmann::json &j) : nlohmann::json{j} {}
};

nlohmann::json j = nlohmann::json::parse("{\"a\":1}");
child c{j};

• What is the expected behavior?
  The type of c should be 'object', not 'array'.

• And what is the actual behavior instead?
  The type of c is 'array'.

• Which compiler and operating system are you using? Is it a supported compiler?
  Visual Studio 2019 (v142)

• Did you use a released version of the library or the version from the develop branch?
  A released version 3.7.0

• If you experience a compilation error: can you compile and run the unit tests?
  This is not a compilation error.

[kyeonghopark]

It can also be reproduced with:

class child : public nlohmann::json {
 public:
  explicit child(const nlohmann::json &j) : j_{j} {}

  nlohmann::json j_;
};

nlohmann::json j = nlohmann::json::parse("{\"a\":1}");
child c{j};

[kyeonghopark]

I verified that it is not reproduced with parentheses in member initializer list:
explicit child(const nlohmann::json &j) : nlohmann::json(j) {}

It seems initialization with curly braces makes it as array.

[nlohmann]

It seems initialization with curly braces makes it as array.

Yes, this is expected behavior for the library.

[kyeonghopark]

Ok, got it.
Thanks.