QA·C Help - 4641

	4641	The identifier '%1s' could conflict in the future with the name of a macro in '<%2s>'.

Identifiers		REFERENCE - ISO:C90-7.13 Future Library Directions, ISO:C99-7.26 Future Library Directions

This is a reserved identifier. It could be introduced as a macro in a future revision of the specified system library file.

Identifiers of this form are described in the ISO:C99 standard in Section 7.26 - Future Library Directions.

Names to avoid are:

Names beginning with E and a digit or an uppercase letter may be added to <errno.h>.
Names beginning with LC_ and an uppercase letter may be added to <locale.h>.
Names beginning with SIG or SIG_ and an uppercase letter may be added to <signal.h>.
Names beginning with LC_ and an uppercase letter may be added to <locale.h>.
Names beginning with PRI or SCN and a lowercase letter may be added to <inttypes.h>.
Names beginning with PRIX or SCNX may be added to <inttypes.h>.
Names beginning with INT and ending with _MAX may be added to <stdint.h>.
Names beginning with INT and ending with _MIN may be added to <stdint.h>.
Names beginning with INT and ending with _C may be added to <stdint.h>.
Names beginning with UINT and ending with _MAX may be added to <stdint.h>.
Names beginning with UINT and ending with _MIN may be added to <stdint.h>.
Names beginning with UINT and ending with _C may be added to <stdint.h>.

Although these names may not currently be used in the standard library, they might be in the future and it is therefore best to avoid them.

For example:


/*PRQA S 553,776,777,2017,2213,3205,3211,3408,3602 ++*/

int EA;                     /* Message 4641 - A macro of this name could be defined in a future revision of <errno.h>    */
typedef int LC_A;           /* Message 4641 - A macro of this name could be defined in a future revision of <locale.h>   */
enum {SIGA = 22};           /* Message 4641 - A macro of this name could be defined in a future revision of <signal.h>   */
struct PRIa {int x;};       /* Message 4641 - A macro of this name could be defined in a future revision of <inttypes.h> */

See also:

4640 The macro '%1s' could conflict in the future with the name of a macro in '<%2s>'.
4642 The macro '%1s' could conflict in the future with the name of a function in '<%2s>'.
4643 The identifier '%1s' could conflict in the future with the name of a function in '<%2s>'.
4644 The macro '%1s' could conflict in the future with the name of a typedef in '<%2s>'.
4645 The identifier '%1s' could conflict in the future with the name of a typedef in '<%2s>'.

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