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🐛 avoid overflow

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Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann
2026-05-20 22:08:45 +02:00
parent b3effb609c
commit 61f0d683e0
3 changed files with 18 additions and 6 deletions
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include/nlohmann/detail/output/serializer.hpp
+6 -3
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@@ -128,7 +128,8 @@ class serializer
const auto new_indent = current_indent + indent_step;
if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
{
indent_string.resize(indent_string.size() * 2, indent_char);
indent_string.resize(std::max(indent_string.size() * 2, static_cast<std::size_t>(new_indent)), indent_char);
JSON_ASSERT(indent_string.size() >= new_indent);
}
// first n-1 elements
@@ -201,7 +202,8 @@ class serializer
const auto new_indent = current_indent + indent_step;
if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
{
indent_string.resize(indent_string.size() * 2, indent_char);
indent_string.resize(std::max(indent_string.size() * 2, static_cast<std::size_t>(new_indent)), indent_char);
JSON_ASSERT(indent_string.size() >= new_indent);
}
// first n-1 elements
@@ -262,7 +264,8 @@ class serializer
const auto new_indent = current_indent + indent_step;
if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
{
indent_string.resize(indent_string.size() * 2, indent_char);
indent_string.resize(std::max(indent_string.size() * 2, static_cast<std::size_t>(new_indent)), indent_char);
JSON_ASSERT(indent_string.size() >= new_indent);
}
o->write_characters(indent_string.c_str(), new_indent);