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Diffstat (limited to 'clang/docs/ReleaseNotes.rst')
| -rw-r--r-- | clang/docs/ReleaseNotes.rst | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst index ec51ffd..9d9a000 100644 --- a/clang/docs/ReleaseNotes.rst +++ b/clang/docs/ReleaseNotes.rst @@ -37,6 +37,8 @@ Potentially Breaking Changes C/C++ Language Potentially Breaking Changes ------------------------------------------- +- The ``__has_builtin`` function now only considers the currently active target when being used with target offloading. + C++ Specific Potentially Breaking Changes ----------------------------------------- - For C++20 modules, the Reduced BMI mode will be the default option. This may introduce @@ -89,9 +91,18 @@ Non-comprehensive list of changes in this release ------------------------------------------------- - Added ``__builtin_elementwise_minnumnum`` and ``__builtin_elementwise_maxnumnum``. +- Trapping UBSan (e.g. ``-fsanitize-trap=undefined``) now emits a string describing the reason for + trapping into the generated debug info. This feature allows debuggers (e.g. LLDB) to display + the reason for trapping if the trap is reached. The string is currently encoded in the debug + info as an artificial frame that claims to be inlined at the trap location. The function used + for the artificial frame is an artificial function whose name encodes the reason for trapping. + The encoding used is currently the same as ``__builtin_verbose_trap`` but might change in the future. + This feature is enabled by default but can be disabled by compiling with + ``-fno-sanitize-annotate-debug-info-traps``. New Compiler Flags ------------------ +- New option ``-fno-sanitize-annotate-debug-info-traps`` added to disable emitting trap reasons into the debug info when compiling with trapping UBSan (e.g. ``-fsanitize-trap=undefined``). Deprecated Compiler Flags ------------------------- @@ -130,11 +141,16 @@ Bug Fixes to Compiler Builtins Bug Fixes to Attribute Support ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +- ``[[nodiscard]]`` is now respected on Objective-C and Objective-C++ methods. + (#GH141504) + Bug Fixes to C++ Support ^^^^^^^^^^^^^^^^^^^^^^^^ - Diagnose binding a reference to ``*nullptr`` during constant evaluation. (#GH48665) - Suppress ``-Wdeprecated-declarations`` in implicitly generated functions. (#GH147293) - Fix a crash when deleting a pointer to an incomplete array (#GH150359). +- Fix an assertion failure when expression in assumption attribute + (``[[assume(expr)]]``) creates temporary objects. Bug Fixes to AST Handling ^^^^^^^^^^^^^^^^^^^^^^^^^ |