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| CodeSonar® 9.2p0 | CONFIDENTIAL | CodeSecure Inc |
動的にメモリ割り当てされたリソースを使用もしくは解放する関数が、割り当てられたリソースの開始位置以外のポインタを引数に呼ばれています。
| クラス名 | Misaligned Object | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 日本語クラス名 | 不整列なオブジェクト | |||||||||||||||
| クラス分類 | セキュリティ (security) | |||||||||||||||
| ニーモニック | ALLOC.MO | |||||||||||||||
| カテゴリー |
|
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| 対応言語 | C および C++ で利用可能です。 |
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| 有効/無効設定 | このワーニングクラスのチェックはデフォルトで有効になっています。チェックを無効にするにはプロジェクト設定ファイル
(configuration file)に以下の WARNING_FILTER ルールを追加してください。
WARNING_FILTER += discard class="Misaligned Object" |
CodeSonar ships with library models that allow it to a large number of functions that use or release a dynamically-allocated resource, across many different libraries. If one of these functions is called with a pointer argument that does not point to the beginning of the allocated object, a warning will be issued.
If you have created a custom library model for some function f() in terms of one of these existing models, calls to f() will also be capable of triggering Misaligned Object warnings.
| Functions that can trigger warnings include... | |
|---|---|
| Apache Portable Runtime (APR) | apr_palloc(), apr_pstrcat() |
| C++ operators | operator delete() |
| FreeRTOS | vQueueDelete() |
| gcc Builtins | __builtin___fprintf_chk(), __builtin_fputc() |
| LDAP | ldap_msgfree() |
| libc | fgetc(), kvm_close() |
| Linux Kernel | free_page(), kfree_() |
| Mac OS X | _FREE(), thread_deallocate() |
| Nucleus | DMCE_Deallocate_Memory(), PMCE_Delete_Partition_Pool() |
| OpenSSL | CRYPTO_free(), CRYPTO_realloc() |
| Qt | qFree(), qRealloc() |
| VxWorks | lstFree(), semDelete() |
| Win32 | CloseHandle(), fscanf_s() |
#include <stdlib.h>
void misaligned_object(void){
char * p = malloc( 10 );
if (!p){
return;
}
free(p + 1); /* 'Misaligned Object' warning issued here */
}
設定ファイルの以下のパラメータがこのワーニングクラスのチェックに影響します。
To report problems with this documentation, please visit https://support.codesecure.com/.