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CodeSonar® 9.2p0 CONFIDENTIAL CodeSecure Inc
C and C++

PARSE.PCLB : Pointer Conversion Loses Bits

Summary

A pointer is cast to an integer type that is narrower than a pointer.

See alsoSee also:

This warning class is derived from a C/C++ parser warning.

Properties

Class Name Pointer Conversion Loses Bits
Significance style
Mnemonic PARSE.PCLB
Categories
MisraC2025 MisraC2025:11.4 A conversion shall not be performed between a pointer to object and an arithmetic type
MisraC2023 MisraC2023:11.4 A conversion should not be performed between a pointer to object and an integer type
Misra2012 Misra2012:11.4 A conversion should not be performed between a pointer to object and an integer type
Misra2004 Misra2004:11.3 A cast should not be performed between a pointer type and an integral type
AUTOSARC++14 AUTOSARC++14:M5-2-9 A cast shall not convert a pointer type to an integral type.
MisraC++2008 MisraC++2008:5-2-9 A cast should not convert a pointer type to an integral type.
MisraC++2023 MisraC++2023:8.2.7 A cast should not convert a pointer type to an integral type
  MisraC++2023:8.2.8 A pointer shall not be cast to an integral type other than std::uintptr_t or std::intptr_t
CWE CWE:704 Incorrect Type Conversion or Cast
TS17961 TS17961:5.10-intptrconv Converting a pointer to integer or integer to pointer
CERT-C CERT-C:INT36-C Converting a pointer to integer or integer to pointer
JSF++ JSF++:182 Type casting from any type to or from pointers shall not be used.
  JSF++:183 Every possible measure should be taken to avoid type casting.
Availability Available for C and C++.
Enabling Checks for this warning class are enabled by default. However, warning instances of this class that are issued as parser errors (rather than parser warnings) will be discarded when using factory configuration settings. To prevent these instances from being discarded, add the following WARNING_FILTER rule to the project configuration file. 
WARNING_FILTER += allow class="Pointer Conversion Loses Bits"
To disable checks for this warning class, add the following WARNING_FILTER rule to the project configuration file. 
WARNING_FILTER += discard class="Pointer Conversion Loses Bits"

Example 

/* Comments on this file reflect a platform where:
 * - int is the same width as pointer
 * - char is narrower than pointer
 * - long long int is wider than pointer
 *
 * If your platform has different type width relationships, you will see a different set of warnings.
 */

void f(int a, long int b, char c);

void parse_pctssi(char *c){
    int i = (int) c;                                     /* int is same width as pointer
                                                          * ('Pointer Conversion to Same Size Integer' and
                                                          *  'Conversion: Pointer/Integer' warnings issued here)
                                                          */
    long long int li = (long long int) c;                 /* long long int is wider than pointer
                                                           * ('Conversion: Pointer/Integer' warning issued here)
                                                           */
    char ch = (char) c;                    /* 'Pointer Conversion Loses Bits' warning issued here
                                            * ('Conversion: Pointer/Integer' warning also issued)
                                            */
    f(i, li, ch);
}

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.

 

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