get cheaper random bytes, less waste and no getpid() calls, which are

done by arc4random(); ok millert@ deraadt@

1 files changed, 3 insertions, 2 deletions

diff --git a/src/lib/libc/stdlib/malloc.c b/src/lib/libc/stdlib/malloc.c
index 39951bc904..67f5de512e 100644
--- a/src/lib/libc/stdlib/malloc.c
+++ b/src/lib/libc/stdlib/malloc.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: malloc.c,v 1.85 2006/12/19 13:00:50 otto Exp $        */
+/*      $OpenBSD: malloc.c,v 1.86 2007/02/12 20:00:14 otto Exp $        */
 
 /*
  * ----------------------------------------------------------------------------
@@ -1672,6 +1672,7 @@ not_return:
 static void
 free_bytes(void *ptr)
 {
+        u_int8_t __arc4_getbyte(void);
         struct pginfo   **mp, **pd, *info;
         struct pdinfo   *pi;
 #ifdef  MALLOC_EXTRA_SANITY
@@ -1687,7 +1688,7 @@ free_bytes(void *ptr)
 
         
         /* delay return, returning a random something from before instead */
-        tmpidx = arc4random() % 16;
+        tmpidx = __arc4_getbyte() % 16;
         tmpptr = chunk_buffer[tmpidx];
         chunk_buffer[tmpidx] = ptr;
         ptr = tmpptr;