| 1 | /* $Id: tstRTAssertCompile.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT Testcase - AssertCompile* - A Compile Time Testcase.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2010-2023 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #include <iprt/assert.h>
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| 42 |
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| 43 |
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| 44 | int main(int argc, char **argv)
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| 45 | {
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| 46 | /* Only positive tests here. */
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| 47 | NOREF(argc); NOREF(argv);
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| 48 |
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| 49 | AssertCompile(true);
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| 50 | AssertCompile(1);
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| 51 | AssertCompile(2);
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| 52 | AssertCompile(99);
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| 53 |
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| 54 | uint8_t u8; NOREF( u8);
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| 55 | uint16_t u16; NOREF(u16);
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| 56 | uint32_t u32; NOREF(u32);
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| 57 | uint64_t u64; NOREF(u64);
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| 58 | AssertCompileSize( u8, 1);
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| 59 | AssertCompileSize(u16, 2);
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| 60 | AssertCompileSize(u32, 4);
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| 61 | AssertCompileSize(u64, 8);
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| 62 |
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| 63 | AssertCompileSizeAlignment( u8, 1);
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| 64 | AssertCompileSizeAlignment(u16, 1);
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| 65 | AssertCompileSizeAlignment(u16, 2);
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| 66 | AssertCompileSizeAlignment(u32, 1);
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| 67 | AssertCompileSizeAlignment(u32, 2);
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| 68 | AssertCompileSizeAlignment(u32, 4);
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| 69 | AssertCompileSizeAlignment(u64, 1);
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| 70 | AssertCompileSizeAlignment(u64, 2);
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| 71 | AssertCompileSizeAlignment(u64, 4);
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| 72 | AssertCompileSizeAlignment(u64, 8);
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| 73 |
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| 74 | typedef struct STRUCT12S
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| 75 | {
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| 76 | uint8_t u8;
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| 77 | uint8_t au8[8];
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| 78 | uint64_t u64;
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| 79 | uint8_t u8UnalignmentFiller1;
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| 80 | uint32_t u32;
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| 81 | uint8_t u8UnalignmentFiller2;
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| 82 | uint16_t u16;
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| 83 | const char *psz;
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| 84 | uint32_t u32A;
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| 85 | uint32_t u32B;
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| 86 | } STRUCT1, STRUCT2;
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| 87 |
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| 88 | AssertCompileMemberSize(STRUCT1, u8, 1);
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| 89 | AssertCompileMemberSize(STRUCT1, u16, 2);
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| 90 | AssertCompileMemberSize(STRUCT1, u32, 4);
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| 91 | AssertCompileMemberSize(STRUCT1, u64, 8);
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| 92 |
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| 93 | AssertCompileMemberSizeAlignment(STRUCT1, u8, 1);
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| 94 | AssertCompileMemberSizeAlignment(STRUCT1, u16, 1);
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| 95 | AssertCompileMemberSizeAlignment(STRUCT1, u16, 2);
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| 96 | AssertCompileMemberSizeAlignment(STRUCT1, u32, 1);
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| 97 | AssertCompileMemberSizeAlignment(STRUCT1, u32, 2);
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| 98 | AssertCompileMemberSizeAlignment(STRUCT1, u32, 4);
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| 99 | AssertCompileMemberSizeAlignment(STRUCT1, u64, 1);
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| 100 | AssertCompileMemberSizeAlignment(STRUCT1, u64, 2);
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| 101 | AssertCompileMemberSizeAlignment(STRUCT1, u64, 4);
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| 102 | AssertCompileMemberSizeAlignment(STRUCT1, u64, 8);
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| 103 | AssertCompileMemberSizeAlignment(STRUCT1, psz, sizeof(void *));
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| 104 |
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| 105 | AssertCompileMemberAlignment(STRUCT1, u8, 1);
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| 106 | AssertCompileMemberAlignment(STRUCT1, u16, 1);
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| 107 | AssertCompileMemberAlignment(STRUCT1, u16, 2);
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| 108 | AssertCompileMemberAlignment(STRUCT1, u32, 1);
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| 109 | AssertCompileMemberAlignment(STRUCT1, u32, 2);
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| 110 | AssertCompileMemberAlignment(STRUCT1, u32, 4);
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| 111 | AssertCompileMemberAlignment(STRUCT1, u64, 1);
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| 112 | AssertCompileMemberAlignment(STRUCT1, u64, 2);
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| 113 | AssertCompileMemberAlignment(STRUCT1, u64, 4);
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| 114 | #if defined(__GNUC__) && ARCH_BITS >= 64
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| 115 | AssertCompileMemberAlignment(STRUCT1, u64, 8);
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| 116 | #endif
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| 117 | AssertCompileMemberAlignment(STRUCT1, psz, sizeof(void *));
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| 118 |
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| 119 | AssertCompileMemberOffset(STRUCT1, u8, 0);
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| 120 | AssertCompileMemberOffset(STRUCT1, au8, 1);
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| 121 | #ifndef _MSC_VER /** @todo figure out why MSC has trouble with these expressions */
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| 122 | AssertCompileMemberOffset(STRUCT1, au8[0], 1);
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| 123 | AssertCompileMemberOffset(STRUCT1, au8[8], 9);
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| 124 | #endif
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| 125 |
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| 126 | typedef union UNION1U
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| 127 | {
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| 128 | STRUCT1 s1;
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| 129 | STRUCT2 s2;
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| 130 | } UNION1;
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| 131 |
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| 132 | AssertCompile2MemberOffsets(UNION1, s1.u8, s2.u8);
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| 133 | AssertCompile2MemberOffsets(UNION1, s1.u16, s2.u16);
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| 134 | AssertCompile2MemberOffsets(UNION1, s1.u32, s2.u32);
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| 135 | AssertCompile2MemberOffsets(UNION1, s1.u64, s2.u64);
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| 136 | AssertCompile2MemberOffsets(UNION1, s1.psz, s2.psz);
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| 137 |
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| 138 | AssertCompileAdjacentMembers(STRUCT1, u32A, u32B);
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| 139 | AssertCompileAdjacentMembers(STRUCT1, u8, au8);
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| 140 | #ifndef _MSC_VER /** @todo figure out why MSC has trouble with these expressions */
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| 141 | AssertCompileAdjacentMembers(STRUCT1, u8, au8[0]);
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| 142 | AssertCompileAdjacentMembers(STRUCT1, au8[0], au8[1]);
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| 143 | #endif
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| 144 |
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| 145 | AssertCompileMembersAtSameOffset(STRUCT1, u8, STRUCT2, u8);
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| 146 | AssertCompileMembersAtSameOffset(STRUCT1, au8, STRUCT2, au8);
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| 147 | AssertCompileMembersAtSameOffset(STRUCT1, u16, STRUCT2, u16);
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| 148 | AssertCompileMembersAtSameOffset(STRUCT1, u32, STRUCT2, u32);
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| 149 | AssertCompileMembersAtSameOffset(STRUCT1, u64, STRUCT2, u64);
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| 150 |
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| 151 | AssertCompileMembersSameSize(STRUCT1, u8, STRUCT2, u8);
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| 152 | AssertCompileMembersSameSize(STRUCT1, au8, STRUCT2, au8);
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| 153 | AssertCompileMembersSameSize(STRUCT1, u16, STRUCT2, u16);
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| 154 | AssertCompileMembersSameSize(STRUCT1, u32, STRUCT2, u32);
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| 155 | AssertCompileMembersSameSize(STRUCT1, u64, STRUCT2, u64);
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| 156 |
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| 157 | AssertCompileMembersSameSizeAndOffset(STRUCT1, u8, STRUCT2, u8);
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| 158 | AssertCompileMembersSameSizeAndOffset(STRUCT1, au8, STRUCT2, au8);
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| 159 | AssertCompileMembersSameSizeAndOffset(STRUCT1, u16, STRUCT2, u16);
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| 160 | AssertCompileMembersSameSizeAndOffset(STRUCT1, u32, STRUCT2, u32);
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| 161 | AssertCompileMembersSameSizeAndOffset(STRUCT1, u64, STRUCT2, u64);
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| 162 |
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| 163 | /*
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| 164 | * Check some cdefs.h macros while where here, we'll be using
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| 165 | * AssertCompile so it's kind of related.
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| 166 | */
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| 167 | #ifdef RT_COMPILER_SUPPORTS_VA_ARGS
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| 168 | # if 0
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| 169 | AssertCompile(RT_COUNT_VA_ARGS() == 0);
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| 170 | AssertCompile(RT_COUNT_VA_ARGS(RT_NOTHING) == 1);
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| 171 | # endif
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| 172 | AssertCompile(RT_COUNT_VA_ARGS(asdf) == 1);
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| 173 | AssertCompile(RT_COUNT_VA_ARGS(yyyy) == 1);
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| 174 | AssertCompile(RT_COUNT_VA_ARGS(_) == 1);
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| 175 | AssertCompile(RT_COUNT_VA_ARGS(1, 2, 3, 4, 5, 6, 7, 8, 9, 0) == 10);
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| 176 | #endif
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| 177 | return 0;
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| 178 | }
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| 179 |
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