On Wed, Apr 12, 2000 at 12:43:17PM +0200, Olaf Titz wrote:
> You can even have the compiler check the format string against the
> arguments with some __attribute__ magic. This alone is reason enough
> to keep it as shown above, printf-compatible.
No you can't. It's not printf, it's scanf magic in this case, and gcc does
not appear to feature a % argument that expects a pointer to a function.
If we add this,
int create_proc_entries(struct proc_dir_entry *parent, char *format, ...)
__attribute__ ((format (scanf, 2, 3)));
and try to compile procbuild.c, we get:
procbuild.c: In function nit_module':
procbuild.c:43: warning: float format, different type arg (arg 6)
If we change %f to %p, gcc expects a pointer to a pointer, which is does not
get. If we change it to %F, we get warnings that our string is incorrect.
Regards,
bert hubert.
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