can't not parse "\\“ string

[wony-zheng]

json::parse("{\"c\": \"a\\a\"}") throw std::invalid_argument, msg: parse error - unexpected '"'

[nlohmann]

Please try with the most recent released version - the error message should be more verbose then.

[abolz]

The error is expected: The string is first processed by the compiler to "{"c": "a\a"}" and a is not a valid escaped character according to the JSON grammar.

If you want a \ in the string literal you need to escape it twice: Once for the compiler and once for the JSON parser. This should work: json::parse("{\"c\": \"a\\\\a\"}") or json::parse(R"({"c": "a\\a"})")

[nlohmann]

The most recent version has this diagnostic message:

[json.exception.parse_error.101] parse error at 10: syntax error - invalid string: forbidden character after backslash; last read: '"a\a'

I hope this makes the syntax error more clear.

[nlohmann]

@wony-zheng Do you need further assistance on this?