diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index 30996687612..6e9bf117b5c 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,5 +1,9 @@
 2005-04-02  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
+	* bcmp.c: Fix warnings and implement using memcmp.
+	* bcopy.c: Fix warnings.
+	* bzero.c: Fix warnings and implement using memset.
+
 	* configure.ac (ac_libiberty_warn_cflags): Add -Wwrite-strings
 	-Wstrict-prototypes.
 	* configure, config.in: Regenerate.
diff --git a/libiberty/bcmp.c b/libiberty/bcmp.c
index 1bd28160f69..c639f9895bc 100644
--- a/libiberty/bcmp.c
+++ b/libiberty/bcmp.c
@@ -15,20 +15,13 @@ result mean @var{x} sorts before @var{y}).
 
 */
 
+#include <stddef.h>
+
+extern int memcmp(const void *, const void *, size_t);
 
 int
-bcmp (char *from, char *to, int count)
+bcmp (const void *s1, const void *s2, size_t count)
 {
-  int rtnval = 0;
-
-  while (count-- > 0)
-    {
-      if (*from++ != *to++)
-	{
-	  rtnval = 1;
-	  break;
-	}
-    }
-  return (rtnval);
+  return memcmp (s1, s2, count);
 }
 
diff --git a/libiberty/bcopy.c b/libiberty/bcopy.c
index 09442474645..1e2eca9c641 100644
--- a/libiberty/bcopy.c
+++ b/libiberty/bcopy.c
@@ -9,17 +9,23 @@ Copies @var{length} bytes from memory region @var{in} to region
 
 */
 
+#include <stddef.h>
+
 void
-bcopy (register char *src, register char *dest, int len)
+bcopy (const void *src, void *dest, size_t len)
 {
   if (dest < src)
-    while (len--)
-      *dest++ = *src++;
+    {
+      const char *firsts = src;
+      char *firstd = dest;
+      while (len--)
+	*firstd++ = *firsts++;
+    }
   else
     {
-      char *lasts = src + (len-1);
-      char *lastd = dest + (len-1);
+      const char *lasts = (const char *)src + (len-1);
+      char *lastd = (char *)dest + (len-1);
       while (len--)
-        *(char *)lastd-- = *(char *)lasts--;
+        *lastd-- = *lasts--;
     }
 }
diff --git a/libiberty/bzero.c b/libiberty/bzero.c
index 1f52d2d3098..44ad73da4d6 100644
--- a/libiberty/bzero.c
+++ b/libiberty/bzero.c
@@ -12,12 +12,12 @@ is deprecated in favor of @code{memset}.
 
 */
 
+#include <stddef.h>
+
+extern void *memset(void *, int, size_t);
 
 void
-bzero (char *to, int count)
+bzero (void *to, size_t count)
 {
-  while (count-- > 0)
-    {
-      *to++ = 0;
-    }
+  memset (to, 0, count);
 }