diff -r bf817b825ed2 -r e081643aae2a test/util_allocator.cpp
--- a/test/util_allocator.cpp	Tue Feb 07 21:53:06 2023 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,167 +0,0 @@
-/*
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
- *
- * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *   1. Redistributions of source code must retain the above copyright
- *      notice, this list of conditions and the following disclaimer.
- *
- *   2. Redistributions in binary form must reproduce the above copyright
- *      notice, this list of conditions and the following disclaimer in the
- *      documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "util_allocator.h"
-
-void *cx_malloc_testing(void *d, size_t n) {
-    auto data = reinterpret_cast<CxTestingAllocator *>(d);
-    void *ptr = malloc(n);
-    data->alloc_total++;
-    if (ptr == nullptr) {
-        data->alloc_failed++;
-    } else {
-        data->tracked.insert(ptr);
-    }
-    return ptr;
-}
-
-void *cx_realloc_testing(void *d, void *mem, size_t n) {
-    auto data = reinterpret_cast<CxTestingAllocator *>(d);
-    void *ptr = realloc(mem, n);
-    if (ptr == mem) {
-        return ptr;
-    } else {
-        data->alloc_total++;
-        if (ptr == nullptr) {
-            data->alloc_failed++;
-        } else {
-            data->free_total++;
-            if (data->tracked.erase(mem) == 0) {
-                data->free_failed++;
-            }
-            data->tracked.insert(ptr);
-        }
-        return ptr;
-    }
-}
-
-void *cx_calloc_testing(void *d, size_t nelem, size_t n) {
-    auto data = reinterpret_cast<CxTestingAllocator *>(d);
-    void *ptr = calloc(nelem, n);
-    data->alloc_total++;
-    if (ptr == nullptr) {
-        data->alloc_failed++;
-    } else {
-        data->tracked.insert(ptr);
-    }
-    return ptr;
-}
-
-void cx_free_testing(void *d, void *mem) {
-    auto data = reinterpret_cast<CxTestingAllocator *>(d);
-    data->free_total++;
-    if (data->tracked.erase(mem) == 0) {
-        data->free_failed++;
-        // do not even attempt to free mem, because it is likely to segfault
-    } else {
-        free(mem);
-    }
-}
-
-cx_allocator_class cx_testing_allocator_class = {
-        cx_malloc_testing,
-        cx_realloc_testing,
-        cx_calloc_testing,
-        cx_free_testing
-};
-
-CxTestingAllocator::CxTestingAllocator() : CxAllocator() {
-    cl = &cx_testing_allocator_class;
-    data = this;
-}
-
-bool CxTestingAllocator::used() const {
-    return alloc_total > 0;
-}
-
-bool CxTestingAllocator::verify() const {
-    return tracked.empty() && alloc_failed == 0 && free_failed == 0 && alloc_total == free_total;
-}
-
-// SELF-TEST
-
-#include <gtest/gtest.h>
-
-TEST(TestingAllocator, ExpectFree) {
-    CxTestingAllocator allocator;
-
-    ASSERT_TRUE(allocator.verify());
-    EXPECT_FALSE(allocator.used());
-    auto ptr = cxMalloc(&allocator, 16);
-    EXPECT_TRUE(allocator.used());
-    ASSERT_NE(ptr, nullptr);
-    EXPECT_FALSE(allocator.verify());
-
-    cxFree(&allocator, ptr);
-    EXPECT_TRUE(allocator.verify());
-}
-
-TEST(TestingAllocator, DetectDoubleFree) {
-    CxTestingAllocator allocator;
-
-    ASSERT_TRUE(allocator.verify());
-    auto ptr = cxMalloc(&allocator, 16);
-    ASSERT_NE(ptr, nullptr);
-
-    cxFree(&allocator, ptr);
-    EXPECT_TRUE(allocator.verify());
-    ASSERT_NO_FATAL_FAILURE(cxFree(&allocator, ptr));
-    EXPECT_FALSE(allocator.verify());
-}
-
-TEST(TestingAllocator, FreeUntracked) {
-    CxTestingAllocator allocator;
-
-    auto ptr = malloc(16);
-    ASSERT_TRUE(allocator.verify());
-    ASSERT_NO_FATAL_FAILURE(cxFree(&allocator, ptr));
-    EXPECT_FALSE(allocator.verify());
-    ASSERT_NO_FATAL_FAILURE(free(ptr));
-}
-
-TEST(TestingAllocator, FullLifecycleWithRealloc) {
-    CxTestingAllocator allocator;
-    ASSERT_TRUE(allocator.verify());
-    auto ptr = cxMalloc(&allocator, 16);
-    ASSERT_NE(ptr, nullptr);
-    EXPECT_EQ(allocator.tracked.size(), 1);
-    ptr = cxRealloc(&allocator, ptr, 256);
-    ASSERT_NE(ptr, nullptr);
-    EXPECT_EQ(allocator.tracked.size(), 1);
-    cxFree(&allocator, ptr);
-    EXPECT_TRUE(allocator.verify());
-}
-
-TEST(TestingAllocator, CallocInitializes) {
-    CxTestingAllocator allocator;
-    const char zeros[16] = {0};
-    auto ptr = cxCalloc(&allocator, 16, 1);
-    EXPECT_EQ(memcmp(ptr, zeros, 16), 0);
-    cxFree(&allocator, ptr);
-    EXPECT_TRUE(allocator.verify());
-}