[PATCH] D106577: [clang] Define __STDC_ISO_10646__

[James Y Knight via Phabricator via cfe-commits]

jyknight added a comment.

I'm not sure we should be populating this.

The _value_ is determined by what libc supports, so it probably needs to be left up to libc to define it.

In glibc, this define is set by the file /usr/include/stdc-predef.h, which GCC implicitly includes into all TUs whether they include libc headers or not. (Clang almost got that feature too in https://reviews.llvm.org/D34158 but it was reverted due to some test failures)


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D106577/new/

https://reviews.llvm.org/D106577