commit 866dee4ea0b3d12cce26989846bfef052787409e
author Richard Smith <richard-llvm@metafoo.co.uk> Mon Apr 02 18:29:43 2018 +0000
committer Richard Smith <richard-llvm@metafoo.co.uk> Mon Apr 02 18:29:43 2018 +0000
tree 083df6f3fd177c354df4d93d61bd98c5605b287c
parent 30eebb0e494e923333457e0161e3fa38efcdde74

Add helper to determine if a field is a zero-length bitfield.

llvm-svn: 328999

clang/lib/AST/Decl.cpp

diff --git a/clang/lib/AST/Decl.cpp b/clang/lib/AST/Decl.cpp
index 4fb687d..b49fda0 100644
--- a/clang/lib/AST/Decl.cpp
+++ b/clang/lib/AST/Decl.cpp
@@ -3691,6 +3691,11 @@
   return getBitWidth()->EvaluateKnownConstInt(Ctx).getZExtValue();
 }
 
+bool FieldDecl::isZeroLengthBitField(const ASTContext &Ctx) const {
+  return isUnnamedBitfield() && !getBitWidth()->isValueDependent() &&
+         getBitWidthValue(Ctx) == 0;
+}
+
 unsigned FieldDecl::getFieldIndex() const {
   const FieldDecl *Canonical = getCanonicalDecl();
   if (Canonical != this)