rjmccall added inline comments.
================
Comment at: lib/Sema/SemaExprObjC.cpp:3358
var &&
- var->getStorageClass() == SC_Extern &&
+ !var->isThisDeclarationADefinition() &&
var->getType().isConstQualified()) {
----------------
ahatanak wrote:
> rjmccall wrote:
> > Hmm. Come to think of it, I wonder if we actually care whether the
> > variable has a definition, given that it's const.
> >
> > Well, we can consider that later. I agree that this change is good.
> If we don't care whether the variable is a definition, it's possible to check
> whether the variable declaration is directly contained in a language linkage
> instead (using a function like isSingleLineLanguageLinkage in
> lib/AST/Decl.cpp).
Nah, let's keep it simple for now.
Well, maybe the rule ought to be "does a definition exist?" rather than "is the
specific declaration that lookup found a definition?"
https://reviews.llvm.org/D31673
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