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1// RUN: %clang_cc1 -fno-rtti -triple x86_64-pc-win32 -fms-extensions -fdump-record-layouts -fsyntax-only %s 2>/dev/null \2// RUN: | FileCheck %s -check-prefix CHECK3 4// Before PR45420, we would only find the alignment on this record. Afterwards,5// we can see the alignment on the typedef through the array type.6// FIXME: What about other type sugar, like _Atomic? This would only matter in a7// packed struct context.8struct __declspec(align(16)) AlignedStruct { int x; };9struct Struct2 {10 char c[16];11};12typedef struct Struct2 __declspec(align(16)) AlignedStruct2;13 14#define CHECK_SIZE(X, Align) \15 _Static_assert(__alignof(struct X) == Align, "should be aligned");16 17#pragma pack(push, 2)18 19struct A {20 struct AlignedStruct a[1];21};22CHECK_SIZE(A, 16);23 24struct B {25 char b;26 AlignedStruct2 a[1];27};28CHECK_SIZE(B, 16);29 30struct C {31 char b;32 AlignedStruct2 a[];33};34CHECK_SIZE(C, 16);35 36// CHECK: *** Dumping AST Record Layout37// CHECK-NEXT: 0 | struct AlignedStruct38// CHECK-NEXT: 0 | int x39// CHECK-NEXT: | [sizeof=16, align=16]40// CHECK: *** Dumping AST Record Layout41// CHECK-NEXT: 0 | struct A42// CHECK-NEXT: 0 | struct AlignedStruct[1] a43// CHECK-NEXT: | [sizeof=16, align=16]44// CHECK: *** Dumping AST Record Layout45// CHECK-NEXT: 0 | struct Struct246// CHECK-NEXT: 0 | char[16] c47// CHECK-NEXT: | [sizeof=16, align=1]48// CHECK: *** Dumping AST Record Layout49// CHECK-NEXT: 0 | struct B50// CHECK-NEXT: 0 | char b51// CHECK-NEXT: 16 | AlignedStruct2[1] a52// CHECK-NEXT: | [sizeof=32, align=16]53// CHECK: *** Dumping AST Record Layout54// CHECK-NEXT: 0 | struct C55// CHECK-NEXT: 0 | char b56// CHECK-NEXT: 16 | AlignedStruct2[] a57// CHECK-NEXT: | [sizeof=16, align=16]58 59#pragma pack(pop)60 61