| ======================================= |
| Clang 9.0.0 (In-Progress) Release Notes |
| ======================================= |
| |
| .. contents:: |
| :local: |
| :depth: 2 |
| |
| Written by the `LLVM Team <https://llvm.org/>`_ |
| |
| .. warning:: |
| |
| These are in-progress notes for the upcoming Clang 9 release. |
| Release notes for previous releases can be found on |
| `the Download Page <https://releases.llvm.org/download.html>`_. |
| |
| Introduction |
| ============ |
| |
| This document contains the release notes for the Clang C/C++/Objective-C |
| frontend, part of the LLVM Compiler Infrastructure, release 9.0.0. Here we |
| describe the status of Clang in some detail, including major |
| improvements from the previous release and new feature work. For the |
| general LLVM release notes, see `the LLVM |
| documentation <https://llvm.org/docs/ReleaseNotes.html>`_. All LLVM |
| releases may be downloaded from the `LLVM releases web |
| site <https://llvm.org/releases/>`_. |
| |
| For more information about Clang or LLVM, including information about the |
| latest release, please see the `Clang Web Site <https://clang.llvm.org>`_ or the |
| `LLVM Web Site <https://llvm.org>`_. |
| |
| Note that if you are reading this file from a Subversion checkout or the |
| main Clang web page, this document applies to the *next* release, not |
| the current one. To see the release notes for a specific release, please |
| see the `releases page <https://llvm.org/releases/>`_. |
| |
| What's New in Clang 9.0.0? |
| ========================== |
| |
| Some of the major new features and improvements to Clang are listed |
| here. Generic improvements to Clang as a whole or to its underlying |
| infrastructure are described first, followed by language-specific |
| sections with improvements to Clang's support for those languages. |
| |
| Major New Features |
| ------------------ |
| |
| - ... |
| |
| Improvements to Clang's diagnostics |
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| |
| - ... |
| |
| Non-comprehensive list of changes in this release |
| ------------------------------------------------- |
| |
| - ... |
| |
| |
| New Compiler Flags |
| ------------------ |
| |
| - ... |
| |
| Deprecated Compiler Flags |
| ------------------------- |
| |
| The following options are deprecated and ignored. They will be removed in |
| future versions of Clang. |
| |
| - ... |
| |
| Modified Compiler Flags |
| ----------------------- |
| |
| - `clang -dumpversion` now returns the version of Clang itself. |
| |
| - ... |
| |
| New Pragmas in Clang |
| -------------------- |
| |
| - ... |
| |
| Attribute Changes in Clang |
| -------------------------- |
| |
| - ... |
| |
| Windows Support |
| --------------- |
| |
| - ... |
| |
| |
| C Language Changes in Clang |
| --------------------------- |
| |
| - ... |
| |
| ... |
| |
| C11 Feature Support |
| ^^^^^^^^^^^^^^^^^^^ |
| |
| ... |
| |
| C++ Language Changes in Clang |
| ----------------------------- |
| |
| - ... |
| |
| C++1z Feature Support |
| ^^^^^^^^^^^^^^^^^^^^^ |
| |
| ... |
| |
| Objective-C Language Changes in Clang |
| ------------------------------------- |
| |
| ... |
| |
| OpenCL C Language Changes in Clang |
| ---------------------------------- |
| |
| ... |
| |
| ABI Changes in Clang |
| -------------------- |
| |
| - ... |
| |
| OpenMP Support in Clang |
| ----------------------- |
| |
| - Added emission of the debug information for NVPTX target devices. |
| |
| CUDA Support in Clang |
| --------------------- |
| |
| - Added emission of the debug information for the device code. |
| |
| Internal API Changes |
| -------------------- |
| |
| These are major API changes that have happened since the 8.0.0 release of |
| Clang. If upgrading an external codebase that uses Clang as a library, |
| this section should help get you past the largest hurdles of upgrading. |
| |
| Build System Changes |
| -------------------- |
| |
| These are major changes to the build system that have happened since the 8.0.0 |
| release of Clang. Users of the build system should adjust accordingly. |
| |
| - In 8.0.0 and below, the install-clang-headers target would install clang's |
| resource directory headers. This installation is now performed by the |
| install-clang-resource-headers target. Users of the old install-clang-headers |
| target should switch to the new install-clang-resource-headers target. The |
| install-clang-headers target now installs clang's API headers (corresponding |
| to its libraries), which is consistent with the install-llvm-headers target. |
| |
| - ... |
| |
| AST Matchers |
| ------------ |
| |
| - ... |
| |
| clang-format |
| ------------ |
| |
| - Add language support for clang-formatting C# files |
| - Add Microsoft coding style to encapsulate default C# formatting style |
| - Added new option `PPDIS_BeforeHash` (in configuration: `BeforeHash`) to |
| `IndentPPDirectives` which indents preprocessor directives before the hash. |
| |
| libclang |
| -------- |
| |
| - When `CINDEXTEST_INCLUDE_ATTRIBUTED_TYPES` is not provided when making a |
| CXType, the equivalent type of the AttributedType is returned instead of the |
| modified type if the user does not want attribute sugar. The equivalent type |
| represents the minimally-desugared type which the AttributedType is |
| canonically equivalent to. |
| |
| |
| Static Analyzer |
| --------------- |
| |
| - The UninitializedObject checker is now considered as stable. |
| (moved from the 'alpha.cplusplus' to the 'optin.cplusplus' package) |
| |
| ... |
| |
| .. _release-notes-ubsan: |
| |
| Undefined Behavior Sanitizer (UBSan) |
| ------------------------------------ |
| |
| - ... |
| |
| Core Analysis Improvements |
| ========================== |
| |
| - ... |
| |
| New Issues Found |
| ================ |
| |
| - ... |
| |
| Python Binding Changes |
| ---------------------- |
| |
| The following methods have been added: |
| |
| - ... |
| |
| Significant Known Problems |
| ========================== |
| |
| Additional Information |
| ====================== |
| |
| A wide variety of additional information is available on the `Clang web |
| page <https://clang.llvm.org/>`_. The web page contains versions of the |
| API documentation which are up-to-date with the Subversion version of |
| the source code. You can access versions of these documents specific to |
| this release by going into the "``clang/docs/``" directory in the Clang |
| tree. |
| |
| If you have any questions or comments about Clang, please feel free to |
| contact us via the `mailing |
| list <https://lists.llvm.org/mailman/listinfo/cfe-dev>`_. |
