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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 authored and GitHub committed 2026-10-13 22:22:22 +02:00
1 parent 6b3580ad0c
commit 84fbe1d017
8 files changed
+51 -11
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include/nlohmann/detail/view/errors.hpp
+2 -3
View File
@@ -55,9 +55,8 @@ template<typename BasicJsonType>
{
if (f.code == error_code::input_too_large)
{
// LCOV_EXCL_START (4 GiB)
NLOHMANN_VIEW_THROW(out_of_range::create(416, "input of 4 GiB or more is not supported by json_document", nullptr));
// LCOV_EXCL_STOP
// (the limit is detail::view::max_input_size: 4 GiB minus 16 bytes)
NLOHMANN_VIEW_THROW(out_of_range::create(416, "input of 4294967280 bytes or more is not supported by json_document", nullptr));
}
const BasicJsonType accepted = BasicJsonType::parse(src, src + size, nullptr, true, ignore_comments, ignore_trailing_commas);
// LCOV_EXCL_START (only if parse() accepts what the view rejects: a bug)