Squid-2.2.STABLE2: delay pools, large initial level
  It is a bit to easy to get a integer overflow when using delay pools
  for limiting daily download. This patch changes the initial calculation
  to use floating point math, allowing a initial pool size of up to 2^31-1.

Index: squid/src/delay_pools.c
diff -u squid/src/delay_pools.c:1.1.1.8.4.2 squid/src/delay_pools.c:1.1.1.8.4.3
--- squid/src/delay_pools.c:1.1.1.8.4.2	Wed May  5 11:33:50 1999
+++ squid/src/delay_pools.c	Wed May 19 23:01:48 1999
@@ -211,18 +211,18 @@
      */
     switch (class) {
     case 1:
-	delay_data[pool].class1->aggregate = (rates->aggregate.max_bytes *
-	    Config.Delay.initial) / 100;
+	delay_data[pool].class1->aggregate = (int)(((double)rates->aggregate.max_bytes *
+	    Config.Delay.initial) / 100);
 	break;
     case 2:
-	delay_data[pool].class2->aggregate = (rates->aggregate.max_bytes *
-	    Config.Delay.initial) / 100;
+	delay_data[pool].class2->aggregate = (int)(((double)rates->aggregate.max_bytes *
+	    Config.Delay.initial) / 100);
 	delay_data[pool].class2->individual_map[0] = 255;
 	delay_data[pool].class2->individual_255_used = 0;
 	break;
     case 3:
-	delay_data[pool].class3->aggregate = (rates->aggregate.max_bytes *
-	    Config.Delay.initial) / 100;
+	delay_data[pool].class3->aggregate = (int)(((double)rates->aggregate.max_bytes *
+	    Config.Delay.initial) / 100);
 	delay_data[pool].class3->network_map[0] = 255;
 	delay_data[pool].class3->network_255_used = 0;
 	memset(&delay_data[pool].class3->individual_255_used, '\0',
@@ -296,8 +296,8 @@
 	    if (!delay_data[pool].class2->individual_255_used) {
 		delay_data[pool].class2->individual_255_used = 1;
 		delay_data[pool].class2->individual[255] =
-		    (Config.Delay.rates[pool]->individual.max_bytes *
-		    Config.Delay.initial) / 100;
+		    (int)(((double)Config.Delay.rates[pool]->individual.max_bytes *
+		    Config.Delay.initial) / 100);
 	    }
 	    return delayId(pool + 1, 255);
 	}
@@ -308,8 +308,8 @@
 		delay_data[pool].class2->individual_map[i] = host;
 		delay_data[pool].class2->individual_map[i + 1] = 255;
 		delay_data[pool].class2->individual[i] =
-		    (Config.Delay.rates[pool]->individual.max_bytes *
-		    Config.Delay.initial) / 100;
+		    (int)(((double)Config.Delay.rates[pool]->individual.max_bytes *
+		    Config.Delay.initial) / 100);
 		break;
 	    }
 	}
@@ -324,8 +324,8 @@
 	if (!delay_data[pool].class3->network_255_used) {
 	    delay_data[pool].class3->network_255_used = 1;
 	    delay_data[pool].class3->network[255] =
-		(Config.Delay.rates[pool]->network.max_bytes *
-		Config.Delay.initial) / 100;
+		(int)(((double)Config.Delay.rates[pool]->network.max_bytes *
+		Config.Delay.initial) / 100);
 	}
     } else {
 	for (i = 0;; i++) {
@@ -336,8 +336,8 @@
 		delay_data[pool].class3->individual_map[i][0] = 255;
 		delay_data[pool].class3->network_map[i + 1] = 255;
 		delay_data[pool].class3->network[i] =
-		    (Config.Delay.rates[pool]->network.max_bytes *
-		    Config.Delay.initial) / 100;
+		    (int)(((double)Config.Delay.rates[pool]->network.max_bytes *
+		    Config.Delay.initial) / 100);
 		break;
 	    }
 	}
@@ -348,8 +348,8 @@
 	if (!(delay_data[pool].class3->individual_255_used[i / 8] & (1 << (i % 8)))) {
 	    delay_data[pool].class3->individual_255_used[i / 8] |= (1 << (i % 8));
 	    delay_data[pool].class3->individual[position] =
-		(Config.Delay.rates[pool]->individual.max_bytes *
-		Config.Delay.initial) / 100;
+		(int)(((double)Config.Delay.rates[pool]->individual.max_bytes *
+		Config.Delay.initial) / 100);
 	}
 	return delayId(pool + 1, position);
     }
@@ -362,8 +362,8 @@
 	    delay_data[pool].class3->individual_map[i][j] = host;
 	    delay_data[pool].class3->individual_map[i][j + 1] = 255;
 	    delay_data[pool].class3->individual[position |= j] =
-		(Config.Delay.rates[pool]->individual.max_bytes *
-		Config.Delay.initial) / 100;
+		(int)(((double)Config.Delay.rates[pool]->individual.max_bytes *
+		Config.Delay.initial) / 100);
 	    break;
 	}
     }