界: Code Quality
程式碼品質不佳，會導致無法預料的行為。從使用者的角度來看，這通常表現為可用性不佳。對於攻擊者而言，這提供了以意想不到的方式向系統施加壓力的機會。
Poor Style: Variable Never Used
Abstract
此變數從未被使用過。
Explanation
此變數從未被使用過。可能這只是一個無用的程式碼，但是這也可能指出了一個錯誤。
範例 1：在以下程式碼中，一個複製貼上錯誤導致相同的迴圈迭代器 (
範例 1：在以下程式碼中，一個複製貼上錯誤導致相同的迴圈迭代器 (
i) 被使用了兩次。變數 j 從未使用過。
int i,j;
for (i=0; i < outer; i++) {
for (i=0; i < inner; i++) {
...
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 563
[2] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Rule 2.8
[3] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-1-3
[4] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 0.1.2, Rule 0.2.1, Rule 0.2.2, Rule 0.2.3, Rule 0.2.4
[5] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3050 CAT II
[6] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3050 CAT II
[7] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3050 CAT II
[8] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3050 CAT II
[9] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3050 CAT II
[10] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3050 CAT II
[11] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3050 CAT II
[12] Standards Mapping - Smart Contract Weakness Classification SWC-131
desc.structural.cpp.poor_style_variable_never_used