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State the exact input size limit of json_document

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The check rejects inputs of 0xFFFFFFF0 bytes or more, but the exception
message and the documentation said 4 GiB. Name the limit once
(max_input_size), and state 4 GiB minus 16 bytes in the message and the
documentation. Test the limit with a container that only claims the size.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
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Niels Lohmann committed 2026-10-11 11:30:19 +02:00
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docs/mkdocs/docs/home/exceptions.md
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@@ -1056,12 +1056,12 @@ MessagePack's ext type and BSON's binary subtype are each stored in a single byt
[`basic_json_document::parse()`](../api/basic_json_document/parse.md) and the other parsing functions of
[`basic_json_document`](../api/basic_json_document/index.md) index a value's position in the source text in 32 bits,
so they do not support an input of 4 GiB or more.
so they do not support an input of 4294967280 bytes (4 GiB minus 16 bytes) or more.
!!! failure "Example message"
```
[json.exception.out_of_range.416] input of 4 GiB or more is not supported by json_document
[json.exception.out_of_range.416] input of 4294967280 bytes or more is not supported by json_document
```
!!! note