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| author | Ted Kremenek <kremenek@apple.com> | 2011-11-14 21:59:25 +0000 |
|---|---|---|
| committer | Ted Kremenek <kremenek@apple.com> | 2011-11-14 21:59:25 +0000 |
| commit | 1fcdaa9c058e65ca4251a3a752e42b5cbd1db736 (patch) | |
| tree | c4f91aa23c68659656e58fc7392e751ee9bd936a /clang/docs/AutomaticReferenceCounting.html | |
| parent | 8e7fbcc3e4713f72444f940fc5bf3ba33b9ddd06 (diff) | |
| download | bcm5719-llvm-1fcdaa9c058e65ca4251a3a752e42b5cbd1db736.tar.gz bcm5719-llvm-1fcdaa9c058e65ca4251a3a752e42b5cbd1db736.zip | |
ARC: make assignment to 'self' within class methods illegal. Fixes <rdar://problem/10416568>.
llvm-svn: 144572
Diffstat (limited to 'clang/docs/AutomaticReferenceCounting.html')
| -rw-r--r-- | clang/docs/AutomaticReferenceCounting.html | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/clang/docs/AutomaticReferenceCounting.html b/clang/docs/AutomaticReferenceCounting.html index ab7debf20c1..0265bbdd385 100644 --- a/clang/docs/AutomaticReferenceCounting.html +++ b/clang/docs/AutomaticReferenceCounting.html @@ -1482,9 +1482,12 @@ implementation.</p></div> <p>The <tt>self</tt> parameter variable of an Objective-C method is never actually retained by the implementation. It is undefined behavior, or at least dangerous, to cause an object to be deallocated -during a message send to that object. To make this -safe, <tt>self</tt> is implicitly <tt>const</tt> unless the method is -in the <a href="#family.semantics.init"><tt>init</tt> family</a>.</p> +during a message send to that object.</p> + +<p>To make this safe, for Objective-C instance methods <tt>self</tt> is +implicitly <tt>const</tt> unless the method is in the <a +href="#family.semantics.init"><tt>init</tt> family</a>. Further, <tt>self</tt> +is <b>always</b> implicitly <tt>const</tt> within a class method.</p> <div class="rationale"><p>Rationale: the cost of retaining <tt>self</tt> in all methods was found to be prohibitive, as |
