diff options
| -rw-r--r-- | clang/lib/CodeGen/CGRecordLayoutBuilder.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CGRecordLayoutBuilder.cpp b/clang/lib/CodeGen/CGRecordLayoutBuilder.cpp index 2fe7e5765de..1631c43eb99 100644 --- a/clang/lib/CodeGen/CGRecordLayoutBuilder.cpp +++ b/clang/lib/CodeGen/CGRecordLayoutBuilder.cpp @@ -160,6 +160,15 @@ void CGRecordLayoutBuilder::LayoutUnion(const RecordDecl *D) { FieldEnd = D->field_end(); Field != FieldEnd; ++Field, ++FieldNo) { assert(Layout.getFieldOffset(FieldNo) == 0 && "Union field offset did not start at the beginning of record!"); + + if (Field->isBitField()) { + uint64_t FieldSize = + Field->getBitWidth()->EvaluateAsInt(Types.getContext()).getZExtValue(); + + // Ignore zero sized bit fields. + if (FieldSize == 0) + continue; + } const llvm::Type *FieldTy = Types.ConvertTypeForMemRecursive(Field->getType()); |
