[PATCH] D157757: [Headers] Replace __need_STDDEF_H_misc with specific __need_ macros

[Ian Anderson via Phabricator via cfe-commits]

iana updated this revision to Diff 549547.
iana marked an inline comment as done.
iana added a comment.

Update the tests to handle diagnostics from stddef.h
Fix stddef.h to support defining __STDC_WANT_LIB_EXT1__ if stddef.h has already been included


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D157757/new/

https://reviews.llvm.org/D157757

Files:
  clang/lib/Headers/stddef.h
  clang/test/Headers/stddef.c
  clang/test/Headers/stddefneeds.c

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