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V6080. Consider checking for misprints.…
Analyzer diagnostics
Additional information
Contents

V6080. Consider checking for misprints. It's possible that an assigned variable should be checked in the next condition.

Jun 11 2020

The analyzer has detected a situation when a variable is initialized or assigned a new value which is expected to be checked in the condition of a subsequent 'if' statement but another variable is checked instead.

This error is demonstrated by the following example:

int ret = foo(....);
if (ret != -1) { .... }
....
int ret2 = bar(....);
if (ret != -1) { .... }    // <=

Programmers often need to check the value returned by a function but use a wrong variable name in the condition of the 'if' statement. This mistake is typically made when you clone a code fragment but forget to modify the name of the variable in the condition. In the example above, the programmer forgot to change the name 'ret' to 'ret2'.

Fixed version:

int ret2 = bar(....);
if (ret2 != -1) { .... }

The following example also demonstrates this mistake:

this.data = calculate(data, ....);
if (data != -1) ....;

Both the variable and the field share the same name, which makes it easy to confuse one with the other.

This diagnostic is heuristic; it compares the names of the variables to conclude if there is a typo. It also performs a basic type check to reduce the number of false positives.

This diagnostic is classified as:

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