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from_bon8(ptr, len) and from_bjdata(ptr, len) had no overload for a pointer and a length, unlike from_cbor/from_msgpack/from_ubjson/ from_bson. The call instead bound to from_*(InputType&&, bool strict), which read ptr as a NUL-terminated C string via strlen and silently converted len to the strict flag. Data containing a 0x00 byte was cut off there; data without one was read past the end of the buffer. Add a deprecated (ptr, len, strict, allow_exceptions) overload for each function that forwards to (ptr, ptr + len, ...), matching the existing deprecated overloads of the other four binary readers. Since neither function ever had this overload, the deprecation is declared as of version 3.13.0, the next unreleased version, rather than the version each function was originally added in. Fixes #5648. Signed-off-by: Niels Lohmann <mail@nlohmann.me>
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