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Fix assertion failure for JSON_DIAGNOSTICS (#3037)

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* Fix assertion failure #3032
This commit is contained in:
Carl Smedstad
2021-10-07 12:24:09 +02:00
committed by GitHub
parent ea528bbfda
commit 62f2997b79
3 changed files with 45 additions and 8 deletions
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18
single_include/nlohmann/json.hpp
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@ -21101,15 +21101,25 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
if (idx >= m_value.array->size())
{
#if JSON_DIAGNOSTICS
// remember array size before resizing
const auto previous_size = m_value.array->size();
// remember array size & capacity before resizing
const auto old_size = m_value.array->size();
const auto old_capacity = m_value.array->capacity();
#endif
m_value.array->resize(idx + 1);
#if JSON_DIAGNOSTICS
// set parent for values added above
set_parents(begin() + static_cast<typename iterator::difference_type>(previous_size), static_cast<typename iterator::difference_type>(idx + 1 - previous_size));
if (JSON_HEDLEY_UNLIKELY(m_value.array->capacity() != old_capacity))
{
// capacity has changed: update all parents
set_parents();
}
else
{
// set parent for values added above
set_parents(begin() + static_cast<typename iterator::difference_type>(old_size), static_cast<typename iterator::difference_type>(idx + 1 - old_size));
}
#endif
assert_invariant();
}
return m_value.array->operator[](idx);