To get a trial key
fill out the form below
Team License (standard version)
Enterprise License (extended version)
* By clicking this button you agree to our Privacy Policy statement

** This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Request our prices
New License
License Renewal
--Select currency--
USD
EUR
GBP
RUB
* By clicking this button you agree to our Privacy Policy statement

** This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Message submitted.

Your message has been sent. We will email you at


If you haven't received our response, please do the following:
check your Spam/Junk folder and click the "Not Spam" button for our message.
This way, you won't miss messages from our team in the future.

>
>
>
V589. The expression of the 'A =- B' ki…
Analyzer Diagnostics
General Analysis (C++)
General Analysis (C#)
General Analysis (Java)
Diagnosis of micro-optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
MISRA errors
AUTOSAR errors
Additional information
Contents

V589. The expression of the 'A =- B' kind is utilized. Consider reviewing it, as it is possible that 'A -= B' was meant.

Aug. 31, 2011

The analyzer detected a potential error: there is a sequence of '=-' characters in code. It might be a misprint and you should use the '-=' operator.

Consider this sample:

size_t size, delta;
...
size =- delta;

This code may be correct, but it is highly probable that there is a misprint and the programmer actually intended to use the '-=' operator. This is the fixed code:

size_t size, delta;
...
size -= delta;

If the code is correct, you may type in an additional space between the characters '=' and '-' to remove the V589 warning. This is an example of correct code where the warning is not generated:

size = -delta;

To make false reports fewer, there are some specific exceptions to the V589 rule. For instance, the analyzer will not generate the warning if a programmer does not use spaces between variables and operators. Here you are some samples of code the analyzer considers safe:

A=-B;
int Z =- 1;
N =- N;

Note. To search for misprints of the 'A =+ B' type, the V588 diagnostic check is used.

This diagnostic is classified as:

This website uses cookies and other technology to provide you a more personalized experience. By continuing the view of our web-pages you accept the terms of using these files. If you don't want your personal data to be processed, please, leave this site.
Learn More →
Accept