tjh.dev
Linux kernel mirror (for testing)
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linux
1// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
2
3/*
4 * BTF-to-C dumper tests for struct packing determination.
5 *
6 * Copyright (c) 2019 Facebook
7 */
8/* ----- START-EXPECTED-OUTPUT ----- */
9struct packed_trailing_space {
10 int a;
11 short b;
12} __attribute__((packed));
13
14struct non_packed_trailing_space {
15 int a;
16 short b;
17};
18
19struct packed_fields {
20 short a;
21 int b;
22} __attribute__((packed));
23
24struct non_packed_fields {
25 short a;
26 int b;
27};
28
29struct nested_packed {
30 char: 4;
31 int a: 4;
32 long int b;
33 struct {
34 char c;
35 int d;
36 } __attribute__((packed)) e;
37} __attribute__((packed));
38
39union union_is_never_packed {
40 int a: 4;
41 char b;
42 char c: 1;
43};
44
45union union_does_not_need_packing {
46 struct {
47 long int a;
48 int b;
49 } __attribute__((packed));
50 int c;
51};
52
53union jump_code_union {
54 char code[5];
55 struct {
56 char jump;
57 int offset;
58 } __attribute__((packed));
59};
60
61/*------ END-EXPECTED-OUTPUT ------ */
62
63int f(struct {
64 struct packed_trailing_space _1;
65 struct non_packed_trailing_space _2;
66 struct packed_fields _3;
67 struct non_packed_fields _4;
68 struct nested_packed _5;
69 union union_is_never_packed _6;
70 union union_does_not_need_packing _7;
71 union jump_code_union _8;
72} *_)
73{
74 return 0;
75}