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


*** 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]>
Improve support of PDB as an external layout source Summary: This patch improves support of PDB as an external layout source in the next cases: - Multiple non-virtual inheritance from packed base classes. When using external layout, there's no need to align `NonVirtualSize` of a base class. It may cause an overlapping when the next base classes will be layouted (but there is a slightly different case in the test because I can't find a way to specify a base offset); - Support of nameless structs and unions. There is no info about nameless child structs and unions in Microsoft cl-emitted PDBs. Instead all its fields are just treated as outer structure's (union's) fields. This also causes a fields overlapping, and makes it possible for unions to have fields located at a non-zero offset. Reviewers: rsmith, zturner, rnk, mstorsjo, majnemer Reviewed By: rnk Subscribers: cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D49871 llvm-svn: 338353 2018-07-31 16:27:06 +08:00
			`*** 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]>`