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Add a new macro __nonnull(x) to use the new GCC33 attribute which checks

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that an argument is not a NULL pointer.

Apply various obvious places.

I belive __printf*() implies __nonnull() so it is not needed on functions
already tagged that way.
This commit is contained in:
Poul-Henning Kamp 2003-07-21 18:35:51 +00:00
parent d7bbb21a9d
commit 622905a855
2 changed files with 22 additions and 16 deletions
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6
sys/sys/cdefs.h
View File

@ -143,6 +143,12 @@
#endif
#endif
#if __GNUC__ == 3 && __GNUC_MINOR__ >= 3
#define __nonnull(x) __attribute__((__nonnull__(x)))
#else
#define __nonnull(x)
#endif
/* XXX: should use `#if __STDC_VERSION__ < 199901'. */
#if !(__GNUC__ == 2 && __GNUC_MINOR__ >= 7 || __GNUC__ >= 3)
#define __func__ NULL

32
sys/sys/systm.h
View File

@ -122,7 +122,7 @@ struct _jmp_buf;
int setjmp(struct _jmp_buf *);
void longjmp(struct _jmp_buf *, int) __dead2;
void Debugger(const char *msg);
void Debugger(const char *msg) __nonnull(1);
int dumpstatus(vm_offset_t addr, off_t count);
int nullop(void);
int eopnotsupp(void);
@ -162,26 +162,26 @@ int vsnprintf(char *, size_t, const char *, __va_list) __printflike(3, 0);
int vsnrprintf(char *, size_t, int, const char *, __va_list) __printflike(4, 0);
int vsprintf(char *buf, const char *, __va_list) __printflike(2, 0);
int ttyprintf(struct tty *, const char *, ...) __printflike(2, 3);
int sscanf(const char *, char const *, ...);
int vsscanf(const char *, char const *, __va_list);
long strtol(const char *, char **, int);
u_long strtoul(const char *, char **, int);
quad_t strtoq(const char *, char **, int);
u_quad_t strtouq(const char *, char **, int);
int sscanf(const char *, char const *, ...) __nonnull(1) __nonnull(2);
int vsscanf(const char *, char const *, __va_list) __nonnull(1) __nonnull(2);
long strtol(const char *, char **, int) __nonnull(1) __nonnull(2);
u_long strtoul(const char *, char **, int) __nonnull(1), __nonnull(2);
quad_t strtoq(const char *, char **, int) __nonnull(1);
u_quad_t strtouq(const char *, char **, int) __nonnull(1);
void tprintf(struct proc *p, int pri, const char *, ...) __printflike(3, 4);
#define ovbcopy(f, t, l) bcopy((f), (t), (l))
void bcopy(const void *from, void *to, size_t len);
void bzero(void *buf, size_t len);
void bcopy(const void *from, void *to, size_t len) __nonnull(1) __nonnull(2);
void bzero(void *buf, size_t len) __nonnull(1);
void *memcpy(void *to, const void *from, size_t len);
void *memcpy(void *to, const void *from, size_t len) __nonnull(1) __nonnull(2);
int copystr(const void *kfaddr, void *kdaddr, size_t len,
size_t *lencopied);
size_t *lencopied) __nonnull(1) __nonnull(2);
int copyinstr(const void *udaddr, void *kaddr, size_t len,
size_t *lencopied);
int copyin(const void *udaddr, void *kaddr, size_t len);
int copyout(const void *kaddr, void *udaddr, size_t len);
size_t *lencopied) __nonnull(1) __nonnull(2);
int copyin(const void *udaddr, void *kaddr, size_t len) __nonnull(1) __nonnull(2);
int copyout(const void *kaddr, void *udaddr, size_t len) __nonnull(1) __nonnull(2);
int fubyte(const void *base);
long fuword(const void *base);
@ -299,8 +299,8 @@ int msleep(void *chan, struct mtx *mtx, int pri, const char *wmesg,
int timo);
void abortsleep(struct thread *td);
#define tsleep(chan, pri, wmesg, timo) msleep(chan, NULL, pri, wmesg, timo)
void wakeup(void *chan);
void wakeup_one(void *chan);
void wakeup(void *chan) __nonnull(1);
void wakeup_one(void *chan) __nonnull(1);
/*
* Common `dev_t' stuff are declared here to avoid #include poisoning