The Syntax enumeration requires at least three bits to store all of its values. Increase the number of bits for SyntaxUsed. Decrease the number of expression arguments allowed by a single bit so that the bit fields continue to add up to 32-bits evenly.

There is no test for this fix because I could find no reasonable way to trigger a visible failure from it.

Thanks to Doug Gregor for spotting this!

llvm-svn: 222456

1 files changed, 2 insertions, 2 deletions

diff --git a/clang/include/clang/Sema/AttributeList.h b/clang/include/clang/Sema/AttributeList.h
index 39e7ccd7b26..c8e8625b0c9 100644
--- a/clang/include/clang/Sema/AttributeList.h
+++ b/clang/include/clang/Sema/AttributeList.h
@@ -94,10 +94,10 @@ private:
 
   /// The number of expression arguments this attribute has.
   /// The expressions themselves are stored after the object.
-  unsigned NumArgs : 16;
+  unsigned NumArgs : 15;
 
   /// Corresponds to the Syntax enum.
-  unsigned SyntaxUsed : 2;
+  unsigned SyntaxUsed : 3;
 
   /// True if already diagnosed as invalid.
   mutable unsigned Invalid : 1;