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2af028132a
Doesn't use them in libc headers so that those don't have to pull in AK/Platform.h. AK_COMPILER_GCC is set _only_ for gcc, not for clang too. (__GNUC__ is defined in clang builds as well.) Using AK_COMPILER_GCC simplifies things some. AK_COMPILER_CLANG isn't as much of a win, other than that it's consistent with AK_COMPILER_GCC.
103 lines
2.6 KiB
C++
103 lines
2.6 KiB
C++
/*
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* Copyright (c) 2022, Peter Elliott <pelliott@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibTest/TestCase.h>
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#include <LibC/mallocdefs.h>
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#include <stdlib.h>
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static constexpr size_t runs = 5000;
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static constexpr size_t ptrs_per_run = 20;
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static size_t random_alignment()
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{
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return 1 << (rand() % 16);
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}
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static size_t random_size()
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{
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int r = rand() % num_size_classes;
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if (r == num_size_classes - 1) {
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return rand() % (1 << 17);
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}
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return size_classes[r] + (rand() % (size_classes[r + 1] - size_classes[r]));
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}
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static bool is_aligned(void* ptr, size_t align)
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{
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return (reinterpret_cast<uintptr_t>(ptr) & (align - 1)) == 0;
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}
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TEST_CASE(posix_memalign_fuzz)
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{
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EXPECT_NO_CRASH("posix_memalign should not crash under regular use", [] {
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for (size_t i = 0; i < runs; ++i) {
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size_t align = random_alignment();
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size_t size = random_size();
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for (size_t j = 0; j < 2; ++j) {
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void* ptrs[ptrs_per_run];
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for (size_t k = 0; k < ptrs_per_run; ++k) {
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EXPECT_EQ(posix_memalign(&(ptrs[k]), align, size), 0);
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EXPECT(is_aligned(ptrs[k], align));
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}
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for (size_t k = 0; k < ptrs_per_run; ++k) {
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free(ptrs[k]);
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}
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}
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}
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return Test::Crash::Failure::DidNotCrash;
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});
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}
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TEST_CASE(posix_memalign_not_power2)
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{
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char secret_ptr[0];
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void* memptr = secret_ptr;
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EXPECT_EQ(posix_memalign(&memptr, 7, 256), EINVAL);
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EXPECT_EQ(memptr, secret_ptr);
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}
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TEST_CASE(aligned_alloc_fuzz)
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{
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EXPECT_NO_CRASH("aligned_alloc should not crash under regular use", [] {
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for (size_t i = 0; i < runs; ++i) {
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size_t align = random_alignment();
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size_t size = random_size();
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for (size_t j = 0; j < 2; ++j) {
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void* ptrs[ptrs_per_run];
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for (size_t k = 0; k < ptrs_per_run; ++k) {
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ptrs[k] = aligned_alloc(align, size);
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EXPECT(ptrs[k]);
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EXPECT(is_aligned(ptrs[k], align));
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}
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for (size_t k = 0; k < ptrs_per_run; ++k) {
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free(ptrs[k]);
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}
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}
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}
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return Test::Crash::Failure::DidNotCrash;
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});
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}
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TEST_CASE(aligned_alloc_not_power2)
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{
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#if defined(AK_COMPILER_CLANG)
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# pragma clang diagnostic push
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# pragma clang diagnostic ignored "-Wnon-power-of-two-alignment"
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#endif
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EXPECT_EQ(aligned_alloc(7, 256), nullptr);
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EXPECT_EQ(errno, EINVAL);
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#if defined(AK_COMPILER_CLANG)
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# pragma clang diagnostic pop
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#endif
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}
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