BDE 4.7.0 Release

Schedule

• The BDE team announces that the BDE 4.7.0 production release was completed on Tuesday, April 23, 2024.

BDE 4.7.0 Release Highlights

New component bdlma_localbufferedobject

This release provides a new component, bdlma_localbufferedobject, that is primarily used to simplify the creation of temporary objects utilizing a local memory buffer (typically on the stack) for efficiency, and is equivalent to creating a temporary object and supplying it a bdlma::LocalSequentialAllocator.

For example:

bdlma::LocalBufferedObject<bsl::string> string;

Here, LocalBufferedObject is syntactic convenience that can be used in place of:

LocalSequentialAllocator localAllocator<1024>;
bsl::string string(&localAllocator);

The LocalBufferedObject class template, in addition an argument (t_TYPE) for the type of object, provides template parameter t_BUFFER_SIZE for the size of the stack buffer, and t_DISABLE_DESTRUCTION to enable eliding the destructor of t_TYPE.

See bdlma_localbufferedobject for more information.

baljsn::Decoder Fixed to Allow Supplying Null Elements in Arrays of Objects

The baljsn::Decoder will now correctly decode arrays of nillable objects where some of the objects have “null” values. Previously, that would result in an error.

For example, imagine decoding messages that contain the following as part of their schema:

<xs:complexType name='Value'>
  <xs:choice>
    <xs:element name='value'  type='xs::string'/>
  </xs:choice>
</xs:complexType>
<element name="values" type="tns::Value" minOccurs="0" maxOccurs="unbounded" nillable="true"/>

The following JSON would previously produce an error on a call to baljsn::Decoder::decode, but will now succeed:

[{"value": "1st text"}, {"value": "2nd text"}, null, {"value": "3rd text"}]

Fixed Tickets:

Summary
ball_logthrottle documentation is incomprehensible
balber::BerEncoder::encode doesn’t support ‘bslstl::StringRef’ leaf values
baljsn_decoder fails to decode arrays of nullable objects where null and non-null values are mixed
GCC 12 generates -Wuninitialized warning in baea_SerializableObjectProxy constructor
bdlma::LocalBufferedObject: create component
Remove transitive metaint inclusion dependencies
BDE json decoders do not offer strict validation of json string contents
Compilation error with range-v3 view to vector conversion and C++20
merge TEOM integration branch to main
Fix 32-bit MSVC bslmf test driver build errors
Please adjust balxml::Formatter::addData documentation
Create alias for std::jthread
Remove clang warnings about converting char[] to bool
Please fix new memory leaks in bdlmt test drivers in nightly build
WyHash of empty string view hits UB on memcpy
Please fix intermittent baljsn_parserutil test failures on AIX
Please document how clients can integrate with debug-linking cmake feature
bdlm::MetricsRegistry::Data should be allocator aware
MetricsRegistry: order of destruction issue
Fix UBs in bdld_datum and tests
‘bslma::TestAllocator’ is not exception-neutral
Add missing performance hinst to new if in Datum
Address UB in bdlc_packedintarray
Address UB in bslma_allocatorutil test driver
Address UB in bslmt_readerwriterlock
Fix the missing thread-safety documentation for bdlbb::PooledBlobBufferFactory
string_view c++17 dpkg build error
AP2 - update baltzo_localtimedescriptor
Clean up bdld_datum
bbs-cmake-module is missing dependency