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.

>
>
>
V2545. MISRA. Conversion between pointe…
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

V2545. MISRA. Conversion between pointers of different object types should not be performed.

June 17, 2019

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

This rule applies only to C.

Casting a pointer to one type to a pointer to another type could result in undefined behavior if these types are aligned differently.

Example of non-compliant code:

void foo( void )
{
  int *pi;
  double *pd = ....;
  typedef int *PI;

  pi = pd;         // <=
  pi = (int*) pd;  // <=
  pi = PI(pd);     // <=
}

This diagnostic also checks the qualifiers of the types referred to by the pointers participating in the conversion:

void foo( void )
{
        double **ppd = ....;
  const double **ppcd = (const double **) ppd;
  
                 double * const *pcpd = ....;
  const volatile double * const *pcvpd =
    (const volatile double * const *) pcpd;
}

An exception is made for cases when the cast is done to pointers to the types 'char', 'signed char', 'unsigned char', or 'void' since such behavior is explicitly defined by the standard.

This diagnostic is classified as:

  • MISRA-C-11.3
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