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[AST] Improve support of external layouts in `MicrosoftRecordLayoutBuilder` Summary: This patch fixes several small problems with external layouts support in `MicrosoftRecordLayoutBuilder`: - aligns properly the size of a struct that ends with a bit field. It was aligned on byte before, not on the size of the field, so the struct size was smaller than it should be; - adjusts the struct size when injecting a vbptr in the case when there were no bases or fields allocated after the vbptr. Similarly, without the adjustment the struct was smaller than it should be; - the same fix as above for the vfptr. All these fixes affect the non-virtual size of a struct, so they are tested through non-virtual inheritance. Reviewers: rnk, zturner, rsmith Reviewed By: rnk Subscribers: jdoerfert, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D58544 llvm-svn: 356047
2019-03-13 21:38:12 +08:00
*** Dumping AST Record Layout
Type: struct S2
Layout: <ASTRecordLayout
Size:64
Alignment:64
FieldOffsets: []>