[all-commits] [llvm/llvm-project] d8136f: [CodeGen][ObjC] Emit a primitive store to store a ...

[ahatanaka via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: d8136f14f125fb27f2326f397df0964bf62078ca
      https://github.com/llvm/llvm-project/commit/d8136f14f125fb27f2326f397df0964bf62078ca
  Author: Akira Hatanaka <ahatanaka at apple.com>
  Date:   2019-12-03 (Tue, 03 Dec 2019)

  Changed paths:
    M clang/lib/CodeGen/CGCall.cpp
    M clang/lib/CodeGen/CGExpr.cpp
    A clang/test/CodeGenObjC/nontrivial-struct-param-init.m

  Log Message:
  -----------
  [CodeGen][ObjC] Emit a primitive store to store a __strong field in
ExpandTypeFromArgs

This fixes a bug in IRGen where a call to `llvm.objc.storeStrong` was
being emitted to initialize a __strong field of an uninitialized
temporary struct, which caused crashes at runtime.

rdar://problem/51807365