BDE 4.27.0 Release

Schedule

The BDE team announces that the BDE 4.27.0 production release was completed on Friday, August 1, 2025.

BDE 4.27.0 Release Highlights

PCRE2 library version update from 10.39 to 10.45

This BDE release updates the version of PCRE2 third-party library used by the implementation of the ‘bdlpcre_regex’ component. PCRE version 10.45 contains various improvements, bug fixes, and security fixes.

Unfortunately, the upstream PCRE2 library has dropped support for the JIT (just-in-time) compiler for the Sparc architecture (note that previously JIT was supported only for 32-bit on Sparc). This change effectively forces the ‘bdlpcre_regex’ component implementation to ignore all JIT related flags and APIs on Sparc.

Utility for Adapting `bsl` Map Types for the Standard Ranges Library

This BDE release adds the utility bdlb::PairUtil::adaptForRanges, which converts a given range whose value type is a bsl::pair into a range whose value type is a std::pair of references to the elements of the bsl::pair. Because certain standard range adaptors work only with standard types such as std::pair, adaptForRanges must be used to make ranges of bsl::pair’s compatible with such standard range adaptors. For example:

bsl::map<int, int> M = {{1, 2}, {3, 4}};

const bsl::vector<int> expectedValues = {2, 4};

assert(bsl::ranges::equal(expectedValues, M | bsl::views::values));  // error

assert(bsl::ranges::equal(expectedValues, bdlb::PairUtil::adaptForRanges(M) | bsl::views::values));  // OK

`ball_fmt`: new component providing formatting macros for ball logging

BDE has added a new component, ball_fmt, that provides for reporting log messages using a bsl::format-style format specification and argument substitution. For example:

BALL_FMT_ERROR("Endpoint '{}' is not in the allowed list", endPoint);

The new <ball_fmt.h> provides logger macros for each log level as well as a macro to be used inside logging-blocks. Each macro is variadic, with the first argument being the format string and the rest the formatted arguments. Note that to bridge the gap between stream and bsl::format based logging we also provide the bslfmt::streamed wrapper, also provided in this release.

For more information, see Introducing BALL_FMT: BALL Logger Support for std::format-style Text Formatting and Enabling bsl::format for Types with an ostream Insert operator<<

Fixed Tickets

Summary
Missing ‘required’ bas request elements have default values
Update pcre2 to version 10.45
bsl::views::values with bsl::map
bsl::format Bring ‘bslfmt_formatterstring’ to gold quality
Update documentation to describe TOCTTOU issues on windows FilesystemUtil::remove
Please provide bdljsn::Json -> bdlat-compatible type conversion
Provide Safe API for Creating Date/Time Objects in BDE Libraries
Evaluate bdlcc_deque case 6 for threat start checks and watchdog
Implement quick and easy stream-operator-based-formatter enabling for classes and templates
Please correct recently introduced issues in bslstl_optional
Please reduce gcc-13 bde-core nightly build issues reported 6/4/2025
Remove Obsolete Usage Restriction Comment
Fix TSAN issue in bdlmt_timereventscheduler.t.cpp
Create bslmt::TimedCompletionGuard, to replace current watchdog code
Make bdlat::FuzzUtil UTF-8-compatible
StackAddressUtil: increase k_IGNORE_FRAMES when xSAN backtrace interceptor is expected
bslfmt_formaterror.h includes the wrong header for std::format_error
Please correct gcc-13 bslfmt issues
bdlb_variantprinter.t.cpp: correct warning
Please fix bslmft_testspecificationgenerator test case 1
bdlde::base64decoder deprecation docs are (potentially) incorrect
Please support checking for required elements in baljsn_decoder
Please correct bslfmt_formatterstring.t.cpp gcc-13 compile errors
Use TimedCompletionGuard in bdlcc
Round-trip error serializing baljsn::DecoderOptions.