[cfe-dev] clang finds errors in its own header files

[James Dennett via cfe-dev]

On Fri, Dec 23, 2016 at 1:40 PM, icloud via cfe-dev <cfe-dev at lists.llvm.org>
wrote:

> Hi Don,
>
> I removed the extra "-I" directives but I still get the same result.
>

This looks somewhat different to me.


> In file included from /usr/local/include/llvm/ADT/APInt.h:20:
> /usr/local/include/llvm/Support/MathExtras.h:248:1: error: unknown type
> name 'constexpr'
> constexpr inline uint32_t Hi_32(uint64_t Value) {
>

You need to specify -std=c++11 (or later) as a compiler option to get
`constexpr` support.  You probably want to do that anyway.

-- James
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