[PATCH] D12834: add gcc abi_tag support

[Stefan Bühler via cfe-commits]

stbuehler updated this revision to Diff 44973.
stbuehler added a comment.

integrate patch by Stephan Bergmann <sbergman at redhat.com>:

- Fix handling of abi_tag attribute on namespaces to match GCC behavior:
  - Forbid the attribute on unnamed namespaces.  (GCC merely produces a warning instead of an error for unnamed or non-inline namespaces, though.)
  - When no tags are given for a (named, inline) namespace, use the namespace's name as tag.


Repository:
  rL LLVM

http://reviews.llvm.org/D12834

Files:
  docs/ItaniumMangleAbiTags.rst
  include/clang/Basic/Attr.td
  include/clang/Basic/DiagnosticSemaKinds.td
  include/clang/Sema/AttributeList.h
  lib/AST/ItaniumMangle.cpp
  lib/Sema/SemaDeclAttr.cpp
  test/SemaCXX/attr-abi-tag-syntax.cpp
  test/SemaCXX/attr-abi-tag.cpp

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