[previous] 0625 [next] [U] '%s' has been declared with both internal and external linkage - the behaviour is undefined.
Explicitly undefined REFERENCE - ISO:C90-6.1.2.2 Linkages of Identifiers

This object has been declared with both internal and external linkage.

For example: 


/*PRQA S 553,2017,3211,3408,3447 ++*/

extern int number;
/* ... */
static int number;                   /* Message 0625 */

MISRA-C:2004 Rules applicable to message 0625:

Rule  1.2  (Required) No reliance shall be placed on undefined or unspecified behaviour.

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