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.

>
>
>
V2525. MISRA. Every 'switch' statement …
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

V2525. MISRA. Every 'switch' statement should contain non-empty switch-clauses.

Nov 19 2018

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

This diagnostic varies for C and C++. In the C language, every 'switch' statement should have at least two non-empty labels, such as 'case' or 'default'. In the C++ language, every 'switch' statement should have at least one non-empty label 'case'.

'switch' constructs that do not meet these requirements are redundant and may indicate a programming mistake.

Example 1:

void example_1(int param)
{
  switch(param)
  {
    case 0:
    default:
      Func();
      break;
  }
}

This 'switch' is redundant and meaningless. No matter the value of 'param', only the body of the 'default' label will be executed.

The following example does not trigger the warning:

void example_2(int param)
{
  switch(param)
  {
    case 0:
      DoSmth1();
      break;
    case 1:
      DoSmth2();
      break;
    ....
    default:
      Func();
      break;
  }
}

Here is an example where the analyzer issues the warning only when using a C compiler:

void example_3(int param)
{
  switch(param)
  {
    case 10:
    case 42:
      DoMath();
      break;
  }
}

This diagnostic is classified as:

  • MISRA-C-16.6
  • MISRA-CPP-6.4.8