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867c2a7d36
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
37 lines
722 B
C++
37 lines
722 B
C++
// RUN: %clang_cc1 -w -triple=x86_64-pc-win32 -fms-compatibility -fdump-record-layouts-simple -foverride-record-layout=%S/Inputs/override-bit-field-layout.layout %s | FileCheck %s
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// CHECK: Type: struct S1
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// CHECK: FieldOffsets: [0, 11]
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struct S1 {
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short a : 3;
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short b : 5;
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};
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// CHECK: Type: struct S2
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// CHECK: FieldOffsets: [64]
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struct S2 {
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virtual ~S2() = default;
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short a : 3;
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};
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// CHECK: Type: struct S3
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// CHECK: Size:32
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// CHECK: FieldOffsets: [0, 1]
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struct S3 {
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int a : 1;
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int b : 2;
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};
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// CHECK: Type: struct S4
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// CHECK: FieldOffsets: [32]
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struct S4 : S3 {
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char c;
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};
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void use_structs() {
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S1 s1s[sizeof(S1)];
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S2 s2s[sizeof(S2)];
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S3 s3s[sizeof(S3)];
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S4 s4s[sizeof(S4)];
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}
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