[all-commits] [llvm/llvm-project] a0a670: Call objc_retainBlock before passing a block as a ...

[ahatanaka via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: a0a670614a36f1686c5086033bef85800128cf66
      https://github.com/llvm/llvm-project/commit/a0a670614a36f1686c5086033bef85800128cf66
  Author: Akira Hatanaka <ahatanaka at apple.com>
  Date:   2019-12-13 (Fri, 13 Dec 2019)

  Changed paths:
    M clang/docs/AutomaticReferenceCounting.rst
    M clang/lib/Sema/SemaExpr.cpp
    M clang/test/CodeGenObjC/arc-blocks.m

  Log Message:
  -----------
  Call objc_retainBlock before passing a block as a variadic argument

Copy the block to the heap before passing it to the callee in case the
block escapes in the callee.

rdar://problem/55683462

Differential Revision: https://reviews.llvm.org/D71431