Poor Style: Value Never Read

Abstract

变量赋值后并不使用，而变成一个死存储。

Explanation

没有使用该变量的值。赋值之后，变量或者被重新赋值，或者超出范围之外。

示例 1：以下摘录的代码为变量 r 赋值，并在没有使用所赋数值的情况下，对其加以重写。


  r = getName();
  r = getNewBuffer(buf);

References

[1] Standards Mapping - Common Weakness Enumeration CWE ID 563

[2] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3050 CAT II

[3] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3050 CAT II

[4] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3050 CAT II

[5] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3050 CAT II

[6] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3050 CAT II

[7] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3050 CAT II

[8] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3050 CAT II

desc.structural.cpp.poor_style_value_never_read

Abstract

变量赋值后并不使用，而变成一个死存储。

Explanation


  r = getName();
  r = getNewBuffer(buf);