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146 lines
3.5 KiB
C
146 lines
3.5 KiB
C
/* Minimal tests to verify libc_malloc_debug.so functionality.
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Copyright (C) 2021-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <malloc.h>
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#include <shlib-compat.h>
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#include <libc-diag.h>
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#include <support/check.h>
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#include <support/support.h>
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extern void (*volatile __free_hook) (void *, const void *);
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extern void *(*volatile __malloc_hook)(size_t, const void *);
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extern void *(*volatile __realloc_hook)(void *, size_t, const void *);
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extern void *(*volatile __memalign_hook)(size_t, size_t, const void *);
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int hook_count, call_count;
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DIAG_PUSH_NEEDS_COMMENT;
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DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations");
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void
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free_called (void *mem, const void *address)
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{
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hook_count++;
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__free_hook = NULL;
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free (mem);
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__free_hook = free_called;
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}
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void *
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malloc_called (size_t bytes, const void *address)
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{
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hook_count++;
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__malloc_hook = NULL;
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void *mem = malloc (bytes);
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__malloc_hook = malloc_called;
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return mem;
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}
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void *
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realloc_called (void *oldptr, size_t bytes, const void *address)
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{
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hook_count++;
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__realloc_hook = NULL;
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void *mem = realloc (oldptr, bytes);
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__realloc_hook = realloc_called;
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return mem;
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}
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void *
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calloc_called (size_t n, size_t size, const void *address)
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{
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hook_count++;
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__malloc_hook = NULL;
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void *mem = calloc (n, size);
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__malloc_hook = malloc_called;
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return mem;
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}
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void *
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memalign_called (size_t align, size_t size, const void *address)
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{
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hook_count++;
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__memalign_hook = NULL;
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void *mem = memalign (align, size);
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__memalign_hook = memalign_called;
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return mem;
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}
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static void initialize_hooks (void)
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{
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__free_hook = free_called;
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__malloc_hook = malloc_called;
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__realloc_hook = realloc_called;
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__memalign_hook = memalign_called;
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}
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void (*__malloc_initialize_hook) (void) = initialize_hooks;
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compat_symbol_reference (libc, __malloc_initialize_hook,
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__malloc_initialize_hook, GLIBC_2_0);
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compat_symbol_reference (libc, __free_hook,
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__free_hook, GLIBC_2_0);
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compat_symbol_reference (libc, __malloc_hook,
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__malloc_hook, GLIBC_2_0);
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compat_symbol_reference (libc, __realloc_hook,
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__realloc_hook, GLIBC_2_0);
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compat_symbol_reference (libc, __memalign_hook,
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__memalign_hook, GLIBC_2_0);
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DIAG_POP_NEEDS_COMMENT;
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static int
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do_test (void)
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{
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void *p;
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p = malloc (0);
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TEST_VERIFY_EXIT (p != NULL);
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call_count++;
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p = realloc (p, 0);
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TEST_VERIFY_EXIT (p == NULL);
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call_count++;
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p = calloc (512, 1);
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TEST_VERIFY_EXIT (p != NULL);
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call_count++;
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free (p);
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call_count++;
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p = memalign (0x100, 0x100);
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TEST_VERIFY_EXIT (p != NULL);
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call_count++;
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free (p);
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call_count++;
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printf ("call_count: %d, hook_count: %d\n", call_count, hook_count);
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#ifdef HOOKS_ENABLED
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TEST_VERIFY_EXIT (call_count == hook_count);
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#else
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TEST_VERIFY_EXIT (hook_count == 0);
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#endif
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exit (0);
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}
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#include <support/test-driver.c>
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