=== modified file 'src/enums.h'
--- src/enums.h	2011-03-18 11:36:50 +0000
+++ src/enums.h	2011-07-04 10:59:09 +0000
@@ -216,21 +216,23 @@
     MEM_CLIENT_INFO,
     MEM_LINK_LIST,
     MEM_DLINK_NODE,
-    MEM_DONTFREE,
     MEM_DREAD_CTRL,
     MEM_DWRITE_Q,
-    MEM_FQDNCACHE_ENTRY,
-    MEM_FWD_SERVER,
     MEM_HTTP_HDR_CC,
     MEM_HTTP_HDR_CONTENT_RANGE,
-    MEM_IPCACHE_ENTRY,
     MEM_MD5_DIGEST,
     MEM_NETDBENTRY,
     MEM_NET_DB_NAME,
     MEM_RELIST,
+    // IMPORTANT: leave this here. pools above are initialized early with memInit()
+    MEM_DONTFREE,
+    // following pools are initialized late by their component if needed (or never)
+    MEM_FQDNCACHE_ENTRY,
+    MEM_FWD_SERVER,
 #if !USE_DNSSERVERS
     MEM_IDNS_QUERY,
 #endif
+    MEM_IPCACHE_ENTRY,
     MEM_MAX
 } mem_type;
 

=== modified file 'src/mem.cc'
--- src/mem.cc	2011-06-22 12:21:39 +0000
+++ src/mem.cc	2011-07-04 10:59:43 +0000
@@ -202,6 +202,7 @@
 void *
 memAllocate(mem_type type)
 {
+    assert(MemPools[type]);
     return MemPools[type]->alloc();
 }
 
@@ -209,6 +210,7 @@
 void
 memFree(void *p, int type)
 {
+    assert(MemPools[type]);
     MemPools[type]->freeOne(p);
 }
 
@@ -503,15 +505,13 @@
 void
 memCheckInit(void)
 {
-    mem_type t;
-
-    for (t = MEM_NONE, ++t; t < MEM_MAX; ++t) {
-        if (MEM_DONTFREE == t)
-            continue;
-
+    mem_type t = MEM_NONE;
+
+    while (++t < MEM_DONTFREE) {
         /*
          * If you hit this assertion, then you forgot to add a
          * memDataInit() line for type 't'.
+         * Or placed the pool type in the wrong section of the enum list.
          */
         assert(MemPools[t]);
     }