434 lines
13 KiB
C++
434 lines
13 KiB
C++
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// RUN: %clang_cc1 -triple powerpc-ibm-aix-xcoff -fdump-record-layouts \
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// RUN: -fsyntax-only -fxl-pragma-pack %s | \
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// RUN: FileCheck %s
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// RUN: %clang_cc1 -triple powerpc64-ibm-aix-xcoff -fdump-record-layouts \
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// RUN: -fsyntax-only -fxl-pragma-pack %s | \
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// RUN: FileCheck %s
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namespace test1 {
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// Test the class layout when having a double which is/is not the first struct
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// member.
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struct D {
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double d1;
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int i1;
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};
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struct DoubleFirst {
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struct D d2;
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int i2;
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};
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struct IntFirst {
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int i3;
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struct D d3;
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};
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int a = sizeof(DoubleFirst);
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int b = sizeof(IntFirst);
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test1::D
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// CHECK-NEXT: 0 | double d1
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// CHECK-NEXT: 8 | int i1
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// CHECK-NEXT: | [sizeof=16, dsize=16, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=16, nvalign=4, preferrednvalign=8]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test1::DoubleFirst
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// CHECK-NEXT: 0 | struct test1::D d2
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// CHECK-NEXT: 0 | double d1
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// CHECK-NEXT: 8 | int i1
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// CHECK-NEXT: 16 | int i2
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// CHECK-NEXT: | [sizeof=24, dsize=24, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=24, nvalign=4, preferrednvalign=8]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test1::IntFirst
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// CHECK-NEXT: 0 | int i3
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// CHECK-NEXT: 4 | struct test1::D d3
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// CHECK-NEXT: 4 | double d1
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// CHECK-NEXT: 12 | int i1
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// CHECK-NEXT: | [sizeof=20, dsize=20, align=4, preferredalign=4,
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// CHECK-NEXT: | nvsize=20, nvalign=4, preferrednvalign=4]
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} // namespace test1
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namespace test2 {
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// Test the class layout when having a zero-sized bitfield followed by double.
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struct Double {
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int : 0;
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double d;
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};
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int a = sizeof(Double);
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test2::Double
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// CHECK-NEXT: 0:- | int
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// CHECK-NEXT: 0 | double d
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// CHECK-NEXT: | [sizeof=8, dsize=8, align=4, preferredalign=4,
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// CHECK-NEXT: | nvsize=8, nvalign=4, preferrednvalign=4]
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} // namespace test2
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namespace test3 {
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// Test the class layout when having a double member in union.
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union A {
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int b;
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double d;
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};
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struct UnionStruct {
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union A a;
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int i;
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};
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int a = sizeof(UnionStruct);
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | union test3::A
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// CHECK-NEXT: 0 | int b
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// CHECK-NEXT: 0 | double d
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// CHECK-NEXT: | [sizeof=8, dsize=8, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=8, nvalign=4, preferrednvalign=8]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test3::UnionStruct
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// CHECK-NEXT: 0 | union test3::A a
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// CHECK-NEXT: 0 | int b
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// CHECK-NEXT: 0 | double d
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// CHECK-NEXT: 8 | int i
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// CHECK-NEXT: | [sizeof=16, dsize=16, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=16, nvalign=4, preferrednvalign=8]
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} // namespace test3
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namespace test4 {
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// Test the class layout when having multiple base classes.
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struct A {
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int a;
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};
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struct B {
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double d;
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};
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class S : A, B {
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};
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int a = sizeof(S);
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test4::A
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// CHECK-NEXT: 0 | int a
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// CHECK-NEXT: | [sizeof=4, dsize=4, align=4, preferredalign=4,
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// CHECK-NEXT: | nvsize=4, nvalign=4, preferrednvalign=4]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test4::B
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// CHECK-NEXT: 0 | double d
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// CHECK-NEXT: | [sizeof=8, dsize=8, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=8, nvalign=4, preferrednvalign=8]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | class test4::S
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// CHECK-NEXT: 0 | struct test4::A (base)
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// CHECK-NEXT: 0 | int a
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// CHECK-NEXT: 4 | struct test4::B (base)
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// CHECK-NEXT: 4 | double d
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// CHECK-NEXT: | [sizeof=12, dsize=12, align=4, preferredalign=4,
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// CHECK-NEXT: | nvsize=12, nvalign=4, preferrednvalign=4]
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} // namespace test4
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namespace test5 {
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struct Empty {
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};
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struct EmptyDer : Empty {
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double d;
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};
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struct NonEmpty {
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int i;
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};
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struct NonEmptyDer : NonEmpty {
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double d;
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};
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int a = sizeof(EmptyDer);
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int b = sizeof(NonEmptyDer);
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test5::Empty (empty)
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// CHECK-NEXT: | [sizeof=1, dsize=1, align=1, preferredalign=1,
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// CHECK-NEXT: | nvsize=1, nvalign=1, preferrednvalign=1]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test5::EmptyDer
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// CHECK-NEXT: 0 | struct test5::Empty (base) (empty)
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// CHECK-NEXT: 0 | double d
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// CHECK-NEXT: | [sizeof=8, dsize=8, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=8, nvalign=4, preferrednvalign=8]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test5::NonEmpty
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// CHECK-NEXT: 0 | int i
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// CHECK-NEXT: | [sizeof=4, dsize=4, align=4, preferredalign=4,
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// CHECK-NEXT: | nvsize=4, nvalign=4, preferrednvalign=4]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test5::NonEmptyDer
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// CHECK-NEXT: 0 | struct test5::NonEmpty (base)
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// CHECK-NEXT: 0 | int i
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// CHECK-NEXT: 4 | double d
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// CHECK-NEXT: | [sizeof=12, dsize=12, align=4, preferredalign=4,
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// CHECK-NEXT: | nvsize=12, nvalign=4, preferrednvalign=4]
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} // namespace test5
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namespace test6 {
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struct A {
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struct B {
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double d[3];
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} b;
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};
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int a = sizeof(A);
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test6::A::B
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// CHECK-NEXT: 0 | double [3] d
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// CHECK-NEXT: | [sizeof=24, dsize=24, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=24, nvalign=4, preferrednvalign=8]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test6::A
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// CHECK-NEXT: 0 | struct test6::A::B b
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// CHECK-NEXT: 0 | double [3] d
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// CHECK-NEXT: | [sizeof=24, dsize=24, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=24, nvalign=4, preferrednvalign=8]
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} // namespace test6
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namespace test7 {
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struct A {
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struct B {
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long double _Complex d[3];
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} b;
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};
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int a = sizeof(A);
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test7::A::B
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// CHECK-NEXT: 0 | _Complex long double [3] d
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// CHECK-NEXT: | [sizeof=48, dsize=48, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=48, nvalign=4, preferrednvalign=8]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test7::A
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// CHECK-NEXT: 0 | struct test7::A::B b
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// CHECK-NEXT: 0 | _Complex long double [3] d
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// CHECK-NEXT: | [sizeof=48, dsize=48, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=48, nvalign=4, preferrednvalign=8]
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} // namespace test7
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namespace test8 {
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struct Emp {};
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struct Y : Emp {
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double d;
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};
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struct Z : Emp {
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Y y;
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};
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int a = sizeof(Z);
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test8::Emp (empty)
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// CHECK-NEXT: | [sizeof=1, dsize=1, align=1, preferredalign=1,
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// CHECK-NEXT: | nvsize=1, nvalign=1, preferrednvalign=1]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test8::Y
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// CHECK-NEXT: 0 | struct test8::Emp (base) (empty)
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// CHECK-NEXT: 0 | double d
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// CHECK-NEXT: | [sizeof=8, dsize=8, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=8, nvalign=4, preferrednvalign=8]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test8::Z
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// CHECK-NEXT: 0 | struct test8::Emp (base) (empty)
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// CHECK-NEXT: 8 | struct test8::Y y
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// CHECK-NEXT: 8 | struct test8::Emp (base) (empty)
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// CHECK-NEXT: 8 | double d
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// CHECK-NEXT: | [sizeof=16, dsize=16, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=16, nvalign=4, preferrednvalign=8]
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} // namespace test8
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namespace test9 {
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// Test the class layout when having a zero-extent array in a base class, which
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// renders the base class not empty.
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struct A { char zea[0]; };
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struct B : A { double d; };
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struct C { double d; };
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struct D : A, C { char x; };
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int a = sizeof(B);
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int b = sizeof(D);
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// CHECK: 0 | struct test9::B
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// CHECK-NEXT: 0 | struct test9::A (base)
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// CHECK-NEXT: 0 | char [0] zea
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// CHECK-NEXT: 0 | double d
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// CHECK-NEXT: | [sizeof=8, dsize=8, align=4, preferredalign=4,
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// CHECK-NEXT: | nvsize=8, nvalign=4, preferrednvalign=4]
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// CHECK: 0 | struct test9::D
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// CHECK-NEXT: 0 | struct test9::A (base)
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// CHECK-NEXT: 0 | char [0] zea
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// CHECK-NEXT: 0 | struct test9::C (base)
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// CHECK-NEXT: 0 | double d
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// CHECK-NEXT: 8 | char x
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// CHECK-NEXT: | [sizeof=12, dsize=9, align=4, preferredalign=4,
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// CHECK-NEXT: | nvsize=9, nvalign=4, preferrednvalign=4]
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} // namespace test9
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namespace test10 {
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struct A { double x; };
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struct B : A {};
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int a = sizeof(B);
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// CHECK: 0 | struct test10::B
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// CHECK-NEXT: 0 | struct test10::A (base)
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// CHECK-NEXT: 0 | double x
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// CHECK-NEXT: | [sizeof=8, dsize=8, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=8, nvalign=4, preferrednvalign=8]
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} // namespace test10
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namespace test11 {
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// Test how #pragma pack and align attribute interacts with AIX `power`
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// alignment rules.
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struct A {
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char a;
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double __attribute__((aligned(16))) d;
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int i;
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};
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struct B {
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double __attribute__((aligned(4))) d1;
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char a;
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double d2;
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};
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#pragma pack(2)
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struct C {
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int i;
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short j;
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double k;
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};
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#pragma pack(pop)
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#pragma pack(2)
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struct D {
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double d;
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short j;
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int i;
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};
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#pragma pack(pop)
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#pragma pack(8)
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struct E {
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double __attribute__((aligned(4))) d;
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short s;
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};
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#pragma pack(pop)
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#pragma pack(4)
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struct F : public D {
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double d;
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};
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#pragma pack(pop)
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#pragma pack(2)
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struct G : public E {
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int i;
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};
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#pragma pack(pop)
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int a = sizeof(A);
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int b = sizeof(B);
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int c = sizeof(C);
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int d = sizeof(D);
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int e = sizeof(E);
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int f = sizeof(F);
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int g = sizeof(G);
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test11::A
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// CHECK-NEXT: 0 | char a
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// CHECK-NEXT: 16 | double d
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// CHECK-NEXT: 24 | int i
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// CHECK-NEXT: | [sizeof=32, dsize=32, align=16, preferredalign=16,
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// CHECK-NEXT: | nvsize=32, nvalign=16, preferrednvalign=16]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test11::B
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// CHECK-NEXT: 0 | double d1
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// CHECK-NEXT: 8 | char a
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// CHECK-NEXT: 12 | double d2
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// CHECK-NEXT: | [sizeof=24, dsize=24, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=24, nvalign=4, preferrednvalign=8]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test11::C
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// CHECK-NEXT: 0 | int i
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// CHECK-NEXT: 4 | short j
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// CHECK-NEXT: 6 | double k
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// CHECK-NEXT: | [sizeof=14, dsize=14, align=2, preferredalign=2,
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// CHECK-NEXT: | nvsize=14, nvalign=2, preferrednvalign=2]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test11::D
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// CHECK-NEXT: 0 | double d
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// CHECK-NEXT: 8 | short j
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// CHECK-NEXT: 10 | int i
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// CHECK-NEXT: | [sizeof=14, dsize=14, align=2, preferredalign=2,
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// CHECK-NEXT: | nvsize=14, nvalign=2, preferrednvalign=2]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test11::E
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// CHECK-NEXT: 0 | double d
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// CHECK-NEXT: 8 | short s
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// CHECK-NEXT: | [sizeof=16, dsize=16, align=4, preferredalign=8,
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// CHECK-NEXT: | nvsize=16, nvalign=4, preferrednvalign=8]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test11::F
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// CHECK-NEXT: 0 | struct test11::D (base)
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// CHECK-NEXT: 0 | double d
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||
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// CHECK-NEXT: 8 | short j
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// CHECK-NEXT: 10 | int i
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||
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// CHECK-NEXT: 16 | double d
|
||
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// CHECK-NEXT: | [sizeof=24, dsize=24, align=4, preferredalign=4,
|
||
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// CHECK-NEXT: | nvsize=24, nvalign=4, preferrednvalign=4]
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct test11::G
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||
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// CHECK-NEXT: 0 | struct test11::E (base)
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// CHECK-NEXT: 0 | double d
|
||
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// CHECK-NEXT: 8 | short s
|
||
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// CHECK-NEXT: 16 | int i
|
||
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|
// CHECK-NEXT: | [sizeof=20, dsize=20, align=2, preferredalign=2,
|
||
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// CHECK-NEXT: | nvsize=20, nvalign=2, preferrednvalign=2]
|
||
|
|
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||
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|
} // namespace test11
|