Our website uses cookies to enhance your browsing experience.
Accept
to the top
close form

Fill out the form in 2 simple steps below:

Your contact information:

Step 1
Congratulations! This is your promo code!

Desired license type:

Step 2
Team license
Enterprise license
** By clicking this button you agree to our Privacy Policy statement
close form
Request our prices
New License
License Renewal
--Select currency--
USD
EUR
* By clicking this button you agree to our Privacy Policy statement

close form
Free PVS‑Studio license for Microsoft MVP specialists
* By clicking this button you agree to our Privacy Policy statement

close form
To get the licence for your open-source project, please fill out this form
* By clicking this button you agree to our Privacy Policy statement

close form
I am interested to try it on the platforms:
* By clicking this button you agree to our Privacy Policy statement

close form
check circle
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.

>
>
>
V2558. MISRA. A pointer/reference param…
menu mobile close menu
Analyzer diagnostics
General Analysis (C++)
General Analysis (C#)
General Analysis (Java)
Micro-Optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
Customer specific requests (C++)
MISRA errors
AUTOSAR errors
OWASP errors (C#)
Problems related to code analyzer
Additional information
toggle menu Contents

V2558. MISRA. A pointer/reference parameter in a function should be declared as pointer/reference to const if the corresponding object was not modified.

Dec 03 2019

This diagnostic rule is based on the software development guidelines developed by MISRA (Motor Industry Software Reliability Association).

This diagnostic rule applies only to code written in C++. The analyzer has detected a situation where an object is passed to a function by pointer or reference without being further modified in the body of the function. This may be a sign of a programming mistake. If this is really the programmer's intention not to modify the object, then the function's signature lacks precision without the 'const' qualifier. Adding 'const' helps prevent potential bugs and make the function's implementation clearer.

Example of non-compliant code:

size_t StringEval(std::string &str)
{
  return str.size();
}

The 'str' variable here is used only to perform a read operation even though it is passed by a non-constant reference. Explicitly declaring the function's parameter constant would signal to the maintainer that the function does not modify the object, and prevent any potential bugs that may occur when changing the function itself.

Fixed code:

size_t StringEval(const std::string &str)
{
  return str.size();
}

This diagnostic is classified as:

  • MISRA-CPP-7.1.2