[llvm-bugs] [Bug 33735] Clang cannot parse xstring in Visual Studio 2017

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=33735

Reid Kleckner <rnk at google.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rnk at google.com
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #1 from Reid Kleckner <rnk at google.com> ---
This error suggests you are not using Clang's version of stddef.h, which
provides a constexpr-compatible implementation of offsetof.

This code compiles successfully with clang on Windows:

#include <stddef.h>
struct Foo { int x, y; };
constexpr size_t off = offsetof(Foo, y);

Check your -isystem flags, and make sure the Windows SDK include directory does
not appear on that list, or it will supersede clang's internal resource
directory headers. Use -imsvc for Windows SDK headers and MSVCRT headers to
make them system headers that appear after the resource directory in include
search.

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