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Fix ambiguous static_cast (#5221)

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* 🐛 fix ambiguous static_cast

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* ✅ add regression test

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* 🐛 fix warning

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* 🚨 fix warning

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

---------

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann
2026-07-02 17:13:04 +02:00
committed by GitHub
parent 8d7e0046f4
commit 31dd15b258
4 changed files with 20 additions and 6 deletions
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include/nlohmann/detail/output/binary_writer.hpp
+4 -2
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@@ -881,7 +881,7 @@ class binary_writer
for (size_t i = 0; i < j.m_data.m_value.binary->size(); ++i)
{
oa->write_character(to_char_type(bjdata_draft3 ? 'B' : 'U'));
oa->write_character(j.m_data.m_value.binary->data()[i]);
oa->write_character(to_char_type(j.m_data.m_value.binary->data()[i]));
}
}
@@ -1634,7 +1634,9 @@ class binary_writer
};
string_t key = "_ArrayType_";
auto it = bjdtype.find(static_cast<string_t>(value.at(key)));
// use get<string_t>() instead of static_cast<string_t> to avoid an
// ambiguous conversion under explicit instantiation on C++17 (see #4825)
auto it = bjdtype.find(value.at(key).template get<string_t>());
if (it == bjdtype.end())
{
return true;
include/nlohmann/json.hpp
+1 -1
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@@ -4302,7 +4302,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
}
};
data m_data = {};
data m_data = {}; // NOLINT(readability-redundant-member-init)
#if JSON_DIAGNOSTICS
/// a pointer to a parent value (for debugging purposes)