[PATCH] D21453: Add support for attribute "overallocated"

[Akira Hatanaka via cfe-commits]

ahatanak updated this revision to Diff 62560.
ahatanak added a comment.

The new patch defines a new attribute "flexible_array", which gets attached to the last array member of a struct.

I made changes to clang to treat arrays marked "flexible_array" as C99's flexible array members where it made sense to do so. There are several places where C99's flexible arrays and "flexible_array" are treated differently. For example, the attribute doesn't change the way arguments are passed or values are returned from a function. It doesn't change objective-c's type encoding either.


http://reviews.llvm.org/D21453

Files:
  include/clang/AST/Decl.h
  include/clang/Basic/Attr.td
  include/clang/Basic/AttrDocs.td
  include/clang/Basic/DiagnosticSemaKinds.td
  include/clang/Sema/AttributeList.h
  lib/AST/Decl.cpp
  lib/AST/ExprConstant.cpp
  lib/CodeGen/CGExpr.cpp
  lib/CodeGen/CodeGenTBAA.cpp
  lib/Sema/SemaDecl.cpp
  lib/Sema/SemaDeclAttr.cpp
  lib/Sema/SemaDeclCXX.cpp
  lib/Sema/SemaExpr.cpp
  lib/Serialization/ASTReaderDecl.cpp
  lib/Serialization/ASTWriterDecl.cpp
  test/CodeGen/object-size.c
  test/CodeGenCXX/catch-undef-behavior.cpp
  test/SemaCXX/flexible-array-attr.cpp

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