As I read the documentation for the attribute, warnings should be issued when a
deprecated entity is used and not when that deprecation is declared.
Thus, as I read it, the following lines should not result in a warning until
the entities they declare are used:
(Lines marked as bogus).
This is not the current behavior of either C or C++
(and they differ in degree of difference from the expectation identified above)
C:
typedef int INT1 __attribute__((deprecated));
typedef INT1 INT2 __attribute__((deprecated)); /* { dg-bogus "'INT1' is
deprecated" "" } */
INT1 foo (void) __attribute__((deprecated)); /* { dg-bogus "'INT1' is
deprecated" "" } */
int bar (INT1 x) __attribute__((deprecated)); /* { dg-bogus "'INT1' is
deprecated" "" } */
INT1 baz (INT1 y) __attribute__((deprecated)); /* { dg-bogus "'INT1' is
deprecated" "" } */
struct s1_rec {
int t1;
INT1 t2 __attribute__((deprecated)) ; /* { dg-bogus "'INT1' is deprecated" ""
} */
} ;
C++:
typedef int INT1 __attribute__((deprecated));
typedef INT1 INT2 __attribute__((deprecated)); /* { dg-bogus "'INT1' is
deprecated" "" } */
INT1 foo (void) __attribute__((deprecated)); /* { dg-bogus "'INT1' is
deprecated" "" } */
int bar (INT1 x) __attribute__((deprecated)); /* { dg-bogus "'INT1' is
deprecated" "" } */
INT1 baz (INT1 y) __attribute__((deprecated)); /* { dg-bogus "'INT1' is
deprecated" "" } */
struct s1_rec {
int t1;
INT1 t2 __attribute__((deprecated)) ; /* { dg-bogus "'INT1' is deprecated" ""
} */
} ;
class T {
public:
void member1(int) __attribute__ ((deprecated));
void member2(INT1) __attribute__ ((__deprecated__)); /* { dg-bogus "'INT1'
is deprecated" "" } */
int member3(T *);
} ;
--
Summary: C/C++ __attribute__((deprecated)) does not appear to
wrap declarations as implied from the doc.
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: iains at gcc dot gnu dot org
GCC target triplet: *-*-*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43778
