[or-cvs] r10199: Fix warnings from -Wunsafe-loop-optimizations, which inciden (in tor/trunk: . src/common src/or)

[nickm@xxxxxxxx]

Author: nickm
Date: 2007-05-16 18:15:48 -0400 (Wed, 16 May 2007)
New Revision: 10199

Modified:
   tor/trunk/
   tor/trunk/src/common/crypto.c
   tor/trunk/src/or/relay.c
Log:
 r12769@catbus:  nickm | 2007-05-16 17:32:01 -0400
 Fix warnings from -Wunsafe-loop-optimizations, which incidentally turned up a logic bug in connection_or_flush_from_first_active_circuit that would overcount the number of cells flushed.



Property changes on: tor/trunk
___________________________________________________________________
 svk:merge ticket from /tor/trunk [r12769] on 8246c3cf-6607-4228-993b-4d95d33730f1

Modified: tor/trunk/src/common/crypto.c
===================================================================
--- tor/trunk/src/common/crypto.c	2007-05-16 22:15:14 UTC (rev 10198)
+++ tor/trunk/src/common/crypto.c	2007-05-16 22:15:48 UTC (rev 10199)
@@ -1494,14 +1494,12 @@
   tor_assert(key_out_len <= DIGEST_LEN*256);
 
   memcpy(tmp, key_in, key_in_len);
-  for (cp = key_out, i=0; key_out_len; ++i, cp += DIGEST_LEN) {
+  for (cp = key_out, i=0; key_out_len >= DIGEST_LEN;
+       ++i, cp += DIGEST_LEN, key_out_len -= DIGEST_LEN) {
     tmp[key_in_len] = i;
     if (crypto_digest(digest, tmp, key_in_len+1))
       goto err;
     memcpy(cp, digest, MIN(DIGEST_LEN, key_out_len));
-    if (key_out_len < DIGEST_LEN)
-      break;
-    key_out_len -= DIGEST_LEN;
   }
   memset(tmp, 0, key_in_len+1);
   tor_free(tmp);

Modified: tor/trunk/src/or/relay.c
===================================================================
--- tor/trunk/src/or/relay.c	2007-05-16 22:15:14 UTC (rev 10198)
+++ tor/trunk/src/or/relay.c	2007-05-16 22:15:48 UTC (rev 10199)
@@ -1807,7 +1807,7 @@
   }
   tor_assert(*next_circ_on_conn_p(circ,conn));
 
-  for (n_flushed = 0; n_flushed < max && queue->head; ++n_flushed) {
+  for (n_flushed = 0; n_flushed < max && queue->head; ) {
     packed_cell_t *cell = cell_queue_pop(queue);
     tor_assert(*next_circ_on_conn_p(circ,conn));