a04d2bc28e
This reverts commit 5ee320dd35
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Change-Id: I1a9c6b06c3aca595f01c629f7649be743dc48e77
318 lines
8.3 KiB
C++
318 lines
8.3 KiB
C++
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include <limits.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <malloc.h>
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#include <unistd.h>
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TEST(malloc, malloc_std) {
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// Simple malloc test.
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void *ptr = malloc(100);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(100U, malloc_usable_size(ptr));
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free(ptr);
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}
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TEST(malloc, malloc_overflow) {
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errno = 0;
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ASSERT_EQ(NULL, malloc(SIZE_MAX));
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ASSERT_EQ(ENOMEM, errno);
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}
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TEST(malloc, calloc_std) {
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// Simple calloc test.
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size_t alloc_len = 100;
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char *ptr = (char *)calloc(1, alloc_len);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(alloc_len, malloc_usable_size(ptr));
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for (size_t i = 0; i < alloc_len; i++) {
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ASSERT_EQ(0, ptr[i]);
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}
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free(ptr);
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}
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TEST(malloc, calloc_illegal) {
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errno = 0;
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ASSERT_EQ(NULL, calloc(-1, 100));
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ASSERT_EQ(ENOMEM, errno);
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}
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TEST(malloc, calloc_overflow) {
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errno = 0;
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ASSERT_EQ(NULL, calloc(1, SIZE_MAX));
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ASSERT_EQ(ENOMEM, errno);
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errno = 0;
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ASSERT_EQ(NULL, calloc(SIZE_MAX, SIZE_MAX));
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ASSERT_EQ(ENOMEM, errno);
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errno = 0;
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ASSERT_EQ(NULL, calloc(2, SIZE_MAX));
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ASSERT_EQ(ENOMEM, errno);
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errno = 0;
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ASSERT_EQ(NULL, calloc(SIZE_MAX, 2));
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ASSERT_EQ(ENOMEM, errno);
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}
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TEST(malloc, memalign_multiple) {
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// Memalign test where the alignment is any value.
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for (size_t i = 0; i <= 12; i++) {
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for (size_t alignment = 1 << i; alignment < (1U << (i+1)); alignment++) {
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char *ptr = reinterpret_cast<char*>(memalign(alignment, 100));
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ASSERT_TRUE(ptr != NULL) << "Failed at alignment " << alignment;
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ASSERT_LE(100U, malloc_usable_size(ptr)) << "Failed at alignment " << alignment;
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ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(ptr) % ((1U << i)))
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<< "Failed at alignment " << alignment;
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free(ptr);
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}
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}
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}
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TEST(malloc, memalign_overflow) {
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ASSERT_EQ(NULL, memalign(4096, SIZE_MAX));
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}
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TEST(malloc, memalign_non_power2) {
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void* ptr;
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for (size_t align = 0; align <= 256; align++) {
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ptr = memalign(align, 1024);
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ASSERT_TRUE(ptr != NULL) << "Failed at align " << align;
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free(ptr);
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}
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}
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TEST(malloc, posix_memalign_non_power2) {
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void* ptr;
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ASSERT_EQ(EINVAL, posix_memalign(&ptr, 17, 1024));
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}
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TEST(malloc, posix_memalign_overflow) {
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void* ptr;
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ASSERT_NE(0, posix_memalign(&ptr, 16, SIZE_MAX));
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}
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TEST(malloc, memalign_realloc) {
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// Memalign and then realloc the pointer a couple of times.
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for (size_t alignment = 1; alignment <= 4096; alignment <<= 1) {
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char *ptr = (char*)memalign(alignment, 100);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(100U, malloc_usable_size(ptr));
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ASSERT_EQ(0U, (intptr_t)ptr % alignment);
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memset(ptr, 0x23, 100);
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ptr = (char*)realloc(ptr, 200);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(200U, malloc_usable_size(ptr));
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ASSERT_TRUE(ptr != NULL);
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for (size_t i = 0; i < 100; i++) {
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ASSERT_EQ(0x23, ptr[i]);
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}
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memset(ptr, 0x45, 200);
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ptr = (char*)realloc(ptr, 300);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(300U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 200; i++) {
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ASSERT_EQ(0x45, ptr[i]);
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}
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memset(ptr, 0x67, 300);
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ptr = (char*)realloc(ptr, 250);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(250U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 250; i++) {
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ASSERT_EQ(0x67, ptr[i]);
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}
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free(ptr);
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}
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}
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TEST(malloc, malloc_realloc_larger) {
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// Realloc to a larger size, malloc is used for the original allocation.
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char *ptr = (char *)malloc(100);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(100U, malloc_usable_size(ptr));
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memset(ptr, 67, 100);
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ptr = (char *)realloc(ptr, 200);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(200U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 100; i++) {
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ASSERT_EQ(67, ptr[i]);
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}
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free(ptr);
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}
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TEST(malloc, malloc_realloc_smaller) {
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// Realloc to a smaller size, malloc is used for the original allocation.
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char *ptr = (char *)malloc(200);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(200U, malloc_usable_size(ptr));
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memset(ptr, 67, 200);
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ptr = (char *)realloc(ptr, 100);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(100U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 100; i++) {
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ASSERT_EQ(67, ptr[i]);
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}
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free(ptr);
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}
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TEST(malloc, malloc_multiple_realloc) {
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// Multiple reallocs, malloc is used for the original allocation.
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char *ptr = (char *)malloc(200);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(200U, malloc_usable_size(ptr));
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memset(ptr, 0x23, 200);
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ptr = (char *)realloc(ptr, 100);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(100U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 100; i++) {
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ASSERT_EQ(0x23, ptr[i]);
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}
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ptr = (char*)realloc(ptr, 50);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(50U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 50; i++) {
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ASSERT_EQ(0x23, ptr[i]);
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}
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ptr = (char*)realloc(ptr, 150);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(150U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 50; i++) {
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ASSERT_EQ(0x23, ptr[i]);
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}
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memset(ptr, 0x23, 150);
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ptr = (char*)realloc(ptr, 425);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(425U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 150; i++) {
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ASSERT_EQ(0x23, ptr[i]);
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}
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free(ptr);
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}
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TEST(malloc, calloc_realloc_larger) {
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// Realloc to a larger size, calloc is used for the original allocation.
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char *ptr = (char *)calloc(1, 100);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(100U, malloc_usable_size(ptr));
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ptr = (char *)realloc(ptr, 200);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(200U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 100; i++) {
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ASSERT_EQ(0, ptr[i]);
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}
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free(ptr);
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}
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TEST(malloc, calloc_realloc_smaller) {
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// Realloc to a smaller size, calloc is used for the original allocation.
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char *ptr = (char *)calloc(1, 200);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(200U, malloc_usable_size(ptr));
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ptr = (char *)realloc(ptr, 100);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(100U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 100; i++) {
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ASSERT_EQ(0, ptr[i]);
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}
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free(ptr);
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}
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TEST(malloc, calloc_multiple_realloc) {
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// Multiple reallocs, calloc is used for the original allocation.
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char *ptr = (char *)calloc(1, 200);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(200U, malloc_usable_size(ptr));
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ptr = (char *)realloc(ptr, 100);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(100U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 100; i++) {
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ASSERT_EQ(0, ptr[i]);
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}
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ptr = (char*)realloc(ptr, 50);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(50U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 50; i++) {
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ASSERT_EQ(0, ptr[i]);
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}
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ptr = (char*)realloc(ptr, 150);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(150U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 50; i++) {
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ASSERT_EQ(0, ptr[i]);
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}
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memset(ptr, 0, 150);
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ptr = (char*)realloc(ptr, 425);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_LE(425U, malloc_usable_size(ptr));
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for (size_t i = 0; i < 150; i++) {
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ASSERT_EQ(0, ptr[i]);
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}
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free(ptr);
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}
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TEST(malloc, realloc_overflow) {
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errno = 0;
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ASSERT_EQ(NULL, realloc(NULL, SIZE_MAX));
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ASSERT_EQ(ENOMEM, errno);
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void* ptr = malloc(100);
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ASSERT_TRUE(ptr != NULL);
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errno = 0;
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ASSERT_EQ(NULL, realloc(ptr, SIZE_MAX));
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ASSERT_EQ(ENOMEM, errno);
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free(ptr);
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}
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TEST(malloc, pvalloc_std) {
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size_t pagesize = sysconf(_SC_PAGESIZE);
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void* ptr = pvalloc(100);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_TRUE((reinterpret_cast<uintptr_t>(ptr) & (pagesize-1)) == 0);
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ASSERT_LE(pagesize, malloc_usable_size(ptr));
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free(ptr);
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}
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TEST(malloc, pvalloc_overflow) {
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ASSERT_EQ(NULL, pvalloc(SIZE_MAX));
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}
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TEST(malloc, valloc_std) {
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size_t pagesize = sysconf(_SC_PAGESIZE);
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void* ptr = pvalloc(100);
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ASSERT_TRUE(ptr != NULL);
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ASSERT_TRUE((reinterpret_cast<uintptr_t>(ptr) & (pagesize-1)) == 0);
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free(ptr);
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}
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TEST(malloc, valloc_overflow) {
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ASSERT_EQ(NULL, valloc(SIZE_MAX));
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}
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