rnk added inline comments.
================
Comment at: clang/lib/Sema/SemaDecl.cpp:6597
+ (getLangOpts().CPlusPlus17 ||
+ Context.getTargetInfo().getCXXABI().isMicrosoft()))
NewVD->setImplicitlyInline();
----------------
thakis wrote:
> Is this related to /Zc:externConstexpr / PR36413? If so, maybe we should do
> the standards-conforming thing by default and ask people to pass
> /Zc:externConstexpr- if they need ABI compat?
>
> Want to add a FIXME about doing this in the AST in the source too?
The way I see it, doing the C++17 thing by default is in some ways more
standards-conforming. We're opting people into the new rules earlier on this
platform because we have to be ABI compatible with the other compiler.
Also, I think this is unrelated to /Zc:externConstexpr: "By default, Visual
Studio always gives a constexpr variable internal linkage, even if you specify
the extern keyword." That's not what we're doing here. We're marking these
things inline, which means they will be merged across TUs, as they would if the
user explicitly added __declspec(selectany).
https://reviews.llvm.org/D47956
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