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Dear AspectC++ users!<br>
<br>
The new release, AspectC++ 2.4, is now available for download at <a
class="moz-txt-link-abbreviated" href="http://www.aspectc.org"
moz-do-not-send="true">www.aspectc.org</a> ...<br>
<pre>Version 2.4 (2025-01-22)
This is an overview about the most important improvements. It is mostly a maintenance
release without changes on the language level. For details refer to the subversion log
and the bug tracker.
* Added a new manual "First Steps", which describes the installation on AspectC++ on
all supported platforms, important command line options, and a "Hello, World"
example.
* The ag++ frontend tool has been improved to handle dependency file generation with
"-M..." correctly. It works nicely in combination with 'cmake' now.
* Fixed various bugs in ac++, e.g. ...
- a segfault on 32 bit machines, which was caused by a bug in the pointcut
expression evaluation for attributes.
- a segfault that could be caused under specific circumstances if a wrapped function
threw an exception.
- the problem that annotations with empty argument list caused the generation of
invalid code.
- bug 792: Execution advice for functions with GNU attribute noreturn
* Support for more recent Clang library versions with Clang 19.1.6 being the latest.
ac++ now also works with Clang libraries that are compiled in the Debug configuration.
* Support for more recent back-end compilers, different platforms, and language standards
- Avoid error message related to C++ 17 nested namespaces
- Support for g++-13 and newer: clang does not support _Float* types natively, which
caused parse problems in gcc header files. Now we check the gcc/clang version
combination and inject type definitions into the generated code, which are parsed by
clang while weaving.
- Added optional module_name attribute to TUnit elements in the project model for
future use.
- Match expressions and signatures can now handle rvalue references
- Implemented workaround to avoid parse errors in gnu system header files when new C23
floating point suffixes in literals, such as 0.0bf16, are used.
- Fix for aarch64 problem for error while parsing math.h, which includes math-vector.h;
in this file the aarch64-gcc-builtins __Float64x2_t and __Float32x4_t are used, as we
run clang with gcc's preprocessor configuration; the fix defines these types as typedefs when needed.
- Improved Phase1 parser: fixes problem with using declarations for operator functions,
e.g. in boost headers.
* Revived Windows port and added *experimental* support for MacOS/arm64
- Fixed code generation and test cases to improve MacOS compatibility
- Code and Makefile fixes needed for successful Windows build.
- Test programs are now compatible with Windows/MinGW, e.g. 'CallBuiltinOperator'
now behaves deterministically
- Added Makefile variable COMPILE_TARGET for optionally passing a target triple
- Modified example 'profiling': it now uses <a class="moz-txt-link-freetext" href="std::chrono">std::chrono</a> for nano second scale measurements
instead of the non-portable inline assembler statement that created an rdtsc x86
instruction
* Internal Refactoring
- Handling transformation of advice code during token scanning of phase 2 instead of
phase 1. This improves error messages.
- Separated Phase 1 syntax and semantic analysis.
- Avoid dependencies in classes that should be front-end-agnostic.
- Moved some functions into the ACModel library that could be useful for other tools.
- Simplified implementation of the diagnostics for problems related to the 'args'
pointcut function and short-circuit evaluation of built-in operators.
- Split the huge CodeWeaver class into two.
- Added configurable helper functions to ACFileID in order to reduce the number of
#ifdefs related to clang version differences.
- Modernized dependency file generation in the Makefiles.
* Reduced implementation dependencies on the Puma library (not maintained).
- Completely avoid dependency to Puma in ACModel.
- <a class="moz-txt-link-freetext" href="Puma::SysCall">Puma::SysCall</a> is no longer used. Many functions could be replace by <a class="moz-txt-link-freetext" href="std::filesystem">std::filesystem</a>.
- Eliminated Puma/lexertl-dependency from PointCutExprParser class.
- Replaced <a class="moz-txt-link-freetext" href="Puma::Array">Puma::Array</a> by <a class="moz-txt-link-freetext" href="std::vector">std::vector</a> and some uses of c-style strings by c++ strings.
- Added file locking functionality into ACModel library so that the model reader and
writer have a cleaner interface and Puma dependencies are further reduced.
- Replaced <a class="moz-txt-link-freetext" href="Puma::VerboseMgr">Puma::VerboseMgr</a> with new Logger class with similar interface to reduce
Puma dependencies.
* Fixed formatting problem of the command help text.
</pre>
<br>
I hope you enjoy the new features. For bug reports, please use <a
class="moz-txt-link-freetext"
href="http://www.aspectc.org/bugzilla/" moz-do-not-send="true">http://www.aspectc.org/bugzilla/</a>.
If you don't have an account, yet, and want to report a bug, please
contact me.<br>
<br>
Best regards,<br>
<p>Olaf Spinczyk</p>
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