[llvm-bugs] [Bug 51966] New: The clang compilation result is inconsistent with the document in Objective-C Automatic Reference Counting (ARC)

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=51966

            Bug ID: 51966
           Summary: The clang compilation result is inconsistent with the
                    document in Objective-C Automatic Reference Counting
                    (ARC)
           Product: clang
           Version: trunk
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Documentation
          Assignee: unassignedclangbugs at nondot.org
          Reporter: sunbohong at gmail.com
                CC: llvm-bugs at lists.llvm.org, richard-llvm at metafoo.co.uk

The Objective-C Automatic Reference Counting page mentions that `a null pointer
is stored into the lvalue using primitive semantics. This step is skipped if
the object is __unsafe_unretained`

However, with ARC, the following code have a different result. 

A null pointer is stored into unsafeObj.

- (void)foo {
  id strongObj;
  __weak id weakObj;
  __unsafe_unretained id unsafeObj;
}

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20210925/daf9ddde/attachment.html>