[cfe-dev] c++ question: can lambda be used in VLA?

[James Dennett via cfe-dev]

On Tue, May 24, 2016 at 6:25 PM, Akira Hatanaka via cfe-dev <
cfe-dev at lists.llvm.org> wrote:

> I wasn't requesting that clang accept lambda expressions used for array
> bounds but was asking whether it was valid in c++. Is this something that
> is open to interpretation because it's not covered by the standard?
>
> FYI, this isn't something that I made up. It was in a code a user wrote.
>
>
It's covered by the standard, and as Clang's error message says, lambdas
are not allowed in constant expressions in C++11 or C++14.

https://isocpp.org/files/papers/N4487.pdf proposed constexpr lambdas for a
future standard, and was accepted by EWG; draft wording is in
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0170r1.pdf

-- James
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