[lib] hash compare function arguments ought to be const qualified
2008-08-14 Stephen Hemminger <stephen.hemminger@vyatta.com>
* lib/hash.h: (struct hash) Hash comparator callback really
ought to treat storage behind arguments as constant - a compare
function with side-effects would be evil.
* */*.c: Adjust comparator functions similarly, thus fixing at least
a few compiler warnings about const qualifier being dropped.
Signed-off-by: Paul Jakma <paul@quagga.net>
diff --git a/lib/hash.h b/lib/hash.h
index a6e3d59..f4b1c23 100644
--- a/lib/hash.h
+++ b/lib/hash.h
@@ -48,16 +48,16 @@
unsigned int (*hash_key) (void *);
/* Data compare function. */
- int (*hash_cmp) (void *, void *);
+ int (*hash_cmp) (const void *, const void *);
/* Backet alloc. */
unsigned long count;
};
extern struct hash *hash_create (unsigned int (*) (void *),
- int (*) (void *, void *));
+ int (*) (const void *, const void *));
extern struct hash *hash_create_size (unsigned int, unsigned int (*) (void *),
- int (*) (void *, void *));
+ int (*) (const void *, const void *));
extern void *hash_get (struct hash *, void *, void * (*) (void *));
extern void *hash_alloc_intern (void *);