bkelley added inline comments.
================
Comment at: lib/Sema/SemaDecl.cpp:10184
+ (!getLangOpts().ObjCAutoRefCount && getLangOpts().ObjCWeak &&
+ VDecl->getType().getObjCLifetime() != Qualifiers::OCL_Weak)) &&
!Diags.isIgnored(diag::warn_arc_repeated_use_of_weak,
----------------
jordan_rose wrote:
> This condition's getting complicated, and it shows up in a few places. Would
> it make sense to factor it out?
What do you think about adding a member function like
`hasMRCNonTrivialWeakObjCLifetime(const ASTContext &Context)` to QualType to
factor out lines 10183-10184? We could use that in D31003, D31004, here, and
D31007.
================
Comment at: lib/Sema/SemaExpr.cpp:10340
- } else if (getLangOpts().ObjCAutoRefCount) {
+ } else if (getLangOpts().ObjCAutoRefCount || getLangOpts().ObjCWeak) {
checkUnsafeExprAssigns(Loc, LHSExpr, RHS.get());
----------------
jordan_rose wrote:
> Does ObjCAutoRefCount imply ObjCWeak? If so, you could just use the latter.
I don't believe so. For Snow Leopard, ARC without weak references was supported
so they can be independent.
https://reviews.llvm.org/D31005
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