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Create a value before giving it its type

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Squashed onto develop from:
- Create a value before giving it its type
- Skip the failed-allocation test when exceptions are disabled
- Keep the created pointer rather than an uninitialized json_value
- Skip the vector<bool> failed-allocation check for VS 2015 with iterator debugging
- Test the remaining to_json overloads with a failing allocation
- Skip the to_json allocation-failure section on VS 2015 Debug
- Fix false GCC -Warray-bounds error with JSON_DIAGNOSTICS at -O3 (#5744)

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann committed 2026-10-06 07:26:53 +02:00
1 parent 8a142bc436
commit 6887cf7e53
6 files changed
+360 -60
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include/nlohmann/json.hpp
+6 -6
View File
@@ -2056,8 +2056,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
if (is_an_object)
{
// the initializer list is a list of pairs -> create an object
m_data.m_type = value_t::object;
m_data.m_value = value_t::object;
m_data.m_type = value_t::object;
for (auto& element_ref : init)
{
@@ -2079,8 +2079,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
}
#endif
// the initializer list describes an array -> create an array
m_data.m_type = value_t::array;
m_data.m_value.array = create<array_t>(init.begin(), init.end());
m_data.m_type = value_t::array;
}
set_parents();
@@ -2093,8 +2093,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
static basic_json binary(const typename binary_t::container_type& init)
{
auto res = basic_json();
res.m_data.m_type = value_t::binary;
res.m_data.m_value = init;
res.m_data.m_type = value_t::binary;
return res;
}
@@ -2104,8 +2104,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
static basic_json binary(const typename binary_t::container_type& init, typename binary_t::subtype_type subtype)
{
auto res = basic_json();
res.m_data.m_type = value_t::binary;
res.m_data.m_value = binary_t(init, subtype);
res.m_data.m_type = value_t::binary;
return res;
}
@@ -2115,8 +2115,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
static basic_json binary(typename binary_t::container_type&& init)
{
auto res = basic_json();
res.m_data.m_type = value_t::binary;
res.m_data.m_value = std::move(init);
res.m_data.m_type = value_t::binary;
return res;
}
@@ -2126,8 +2126,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
static basic_json binary(typename binary_t::container_type&& init, typename binary_t::subtype_type subtype)
{
auto res = basic_json();
res.m_data.m_type = value_t::binary;
res.m_data.m_value = binary_t(std::move(init), subtype);
res.m_data.m_type = value_t::binary;
return res;
}