91 changes: 91 additions & 0 deletions clang/test/Layout/ms-x86-pack-and-align.cpp
View file
Original file line number Diff line number Diff line change
Expand Up @@ -652,7 +652,94 @@ struct OD : OC {};
// CHECK-X64-NEXT: | [sizeof=12, align=1
// CHECK-X64-NEXT: | nvsize=8, nvalign=1]

struct __declspec(align(4)) PA {
int c;
};

typedef __declspec(align(8)) PA PB;

#pragma pack(push, 1)
struct PC {
char a;
PB x;
};
#pragma pack(pop)

// CHECK: *** Dumping AST Record Layout
// CHECK: 0 | struct PC
// CHECK-NEXT: 0 | char a
// CHECK-NEXT: 8 | struct PA x
// CHECK-NEXT: 8 | int c
// CHECK-NEXT: | [sizeof=4, align=4
// CHECK-NEXT: | nvsize=4, nvalign=4]
// CHECK-NEXT: | [sizeof=16, align=8
// CHECK-NEXT: | nvsize=12, nvalign=8]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: 0 | struct PC
// CHECK-X64-NEXT: 0 | char a
// CHECK-X64-NEXT: 8 | struct PA x
// CHECK-X64-NEXT: 8 | int c
// CHECK-X64-NEXT: | [sizeof=4, align=4
// CHECK-X64-NEXT: | nvsize=4, nvalign=4]
// CHECK-X64-NEXT: | [sizeof=16, align=8
// CHECK-X64-NEXT: | nvsize=12, nvalign=8]

typedef int __declspec(align(2)) QA;
#pragma pack(push, 1)
struct QB {
char a;
QA b;
};
#pragma pack(pop)

// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct QB
// CHECK-NEXT: 0 | char a
// CHECK-NEXT: 2 | QA b
// CHECK-NEXT: | [sizeof=6, align=2
// CHECK-NEXT: | nvsize=6, nvalign=2]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64-NEXT: 0 | struct QB
// CHECK-X64-NEXT: 0 | char a
// CHECK-X64-NEXT: 2 | QA b
// CHECK-X64-NEXT: | [sizeof=6, align=2
// CHECK-X64-NEXT: | nvsize=6, nvalign=2]

struct QC {
char a;
QA b;
};

// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct QC
// CHECK-NEXT: 0 | char a
// CHECK-NEXT: 4 | QA b
// CHECK-NEXT: | [sizeof=8, align=4
// CHECK-NEXT: | nvsize=8, nvalign=4]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64-NEXT: 0 | struct QC
// CHECK-X64-NEXT: 0 | char a
// CHECK-X64-NEXT: 4 | QA b
// CHECK-X64-NEXT: | [sizeof=8, align=4
// CHECK-X64-NEXT: | nvsize=8, nvalign=4]

struct QD {
char a;
QA b : 3;
};

// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct QD
// CHECK-NEXT: 0 | char a
// CHECK-NEXT: 4 | QA b
// CHECK-NEXT: | [sizeof=8, align=4
// CHECK-NEXT: | nvsize=8, nvalign=4]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64-NEXT: 0 | struct QD
// CHECK-X64-NEXT: 0 | char a
// CHECK-X64-NEXT: 4 | QA b
// CHECK-X64-NEXT: | [sizeof=8, align=4
// CHECK-X64-NEXT: | nvsize=8, nvalign=4]

int a[
sizeof(X)+
Expand Down Expand Up @@ -680,4 +767,8 @@ sizeof(RC)+
sizeof(RE)+
sizeof(ND)+
sizeof(OD)+
sizeof(PC)+
sizeof(QB)+
sizeof(QC)+
sizeof(QD)+
0];