Revert r290149: Add the alloc_size attribute to clang.

This commit fails MSan when running test/CodeGen/object-size.c in
a confusing way. After some discussion with George, it isn't really
clear what is going on here. We can make the MSan failure go away by
testing for the invalid bit, but *why* things are invalid isn't clear.
And yet, other code in the surrounding area is doing precisely this and
testing for invalid.

George is going to take a closer look at this to better understand the
nature of the failure and recommit it, for now backing it out to clean
up MSan builds.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@290169 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 9 deletions

diff --git a/include/clang/Basic/Attr.td b/include/clang/Basic/Attr.td
index f6a5e54b2b..4c8276a553 100644
--- a/include/clang/Basic/Attr.td
+++ b/include/clang/Basic/Attr.td
@@ -780,15 +780,6 @@ def EmptyBases : InheritableAttr, TargetSpecificAttr<TargetMicrosoftCXXABI> {
   let Documentation = [EmptyBasesDocs];
 }
 
-def AllocSize : InheritableAttr {
-  let Spellings = [GCC<"alloc_size">];
-  let Subjects = SubjectList<[HasFunctionProto], WarnDiag,
-                             "ExpectedFunctionWithProtoType">;
-  let Args = [IntArgument<"ElemSizeParam">, IntArgument<"NumElemsParam", 1>];
-  let TemplateDependent = 1;
-  let Documentation = [AllocSizeDocs];
-}
-
 def EnableIf : InheritableAttr {
   let Spellings = [GNU<"enable_if">];
   let Subjects = SubjectList<[Function]>;