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Diffstat (limited to 'clang/docs/LanguageExtensions.rst')
| -rw-r--r-- | clang/docs/LanguageExtensions.rst | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/clang/docs/LanguageExtensions.rst b/clang/docs/LanguageExtensions.rst index 6d9bbcbd3a5..bb9b4c11be5 100644 --- a/clang/docs/LanguageExtensions.rst +++ b/clang/docs/LanguageExtensions.rst @@ -1191,12 +1191,14 @@ Automatic reference counting Clang provides support for :doc:`automated reference counting <AutomaticReferenceCounting>` in Objective-C, which eliminates the need -for manual ``retain``/``release``/``autorelease`` message sends. There are two +for manual ``retain``/``release``/``autorelease`` message sends. There are three feature macros associated with automatic reference counting: ``__has_feature(objc_arc)`` indicates the availability of automated reference counting in general, while ``__has_feature(objc_arc_weak)`` indicates that automated reference counting also includes support for ``__weak`` pointers to -Objective-C objects. +Objective-C objects. ``__has_feature(objc_arc_fields)`` indicates that C structs +are allowed to have fields that are pointers to Objective-C objects managed by +automatic reference counting. .. _objc-fixed-enum: |
