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ISO C99 Language features REFERENCE - ISO:C99-6.2.5 Types

Type 'long long' has been used and will be treated as a synonym for type 'long' unless the language extension option "-ex LONGLONG" is enabled (compiler personality).

'long long' is not supported in ISO:C90; it is a feature of ISO:C99.

Message 1027 will not be generated if the language extension option "-ex LONGLONG" is enabled.

For example: 


/*PRQA S 553,2017,3210,3408,3447 ++*/

extern long long          sll;                  /* Message 1027 */
extern unsigned long long ull;                  /* Message 1027 */

MISRA C:2012 Rules applicable to message 1027:

Dir-1.1  (Required) Any implementation-defined behaviour on which the output of the program depends shall be documented and understood

See also:

QA·C Source Code Analyser 8.1
MISRA C:2012 Compliance Module 1.0
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