llvm-project/clang/test/CodeGenCXX/Inputs/override-layout-nameless-struct-union.layout

*** Dumping AST Record Layout
Type: struct S

Layout: <ASTRecordLayout
  Size:64
  Alignment:32
  FieldOffsets: [0, 32, 32]>

*** Dumping AST Record Layout
Type: union U

Layout: <ASTRecordLayout
  Size:96
  Alignment:32
  FieldOffsets: [0, 0, 32, 64, 68, 73]>