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Language extensions

C++ 'reference' declarations (declarations containing &) are not valid in ISO:C but because the "-ex C++" option is enabled, this syntax is being parsed as a language extension. If the language extension option were not enabled, message 1013 (a syntax error) would be generated instead.

For example: 


/*PRQA S 553,2211,3199,3203,3205,3227,3408 ++*/
/************************/
/* OPTIONS: -ex C++     */
/************************/

int foo(int *a);


void func1(int &a)                  /* Message 1012 */
{
    int &b = a;                     /* Message 1012 */
    int *c = &a;
    int r;

    r = foo(&a);
}

MISRA-C:2004 Rules applicable to message 1012:

Rule  1.1  (Required) All code shall conform to ISO/IEC 9899:1990 C programming language, ISO 9899, amended and corrected by ISO/IEC 9899/COR1:1995, ISO/IEC 9899/AMD1:1995, and ISO/IEC 9899/COR2: 1996192

See also:

QA·C Source Code Analyser 8.1
MISRA-C:2004 Compliance Module 3.2
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