QA·C Help - 0630

	0630	[U] More than one definition of '%s' (with external linkage).

Explicitly undefined		REFERENCE - ISO:C90-6.7 External Definitions - Semantics

A global object or function has been defined more than once. It is possible to have multiple declarations, but there should only ever be one definition. Multiple definitions are not allowed, even if the definitions are identical.

For example:


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


int number=1;
/* ... */
int number=1;                   /* Message 0630 */


extern void foo(void)
{
}

extern void foo(void)           /* Message 0630 */
{
}

See also:

0629 [C] More than one definition of '%s' (with internal linkage).
0631 [C] More than one declaration of '%s' (with no linkage).

Personality Groups | Glossary | Message Index

Contents