diff --git a/code/amcss.c b/code/amcss.c
index f0b477ecb5..018211054b 100644
--- a/code/amcss.c
+++ b/code/amcss.c
@@ -95,7 +95,12 @@ static void report(void)
 
 static mps_addr_t make(size_t rootsCount)
 {
-  static unsigned long calls = 0;
+  /* The calls variable is useful when debugging to stop the debugging
+     after a certain number of allocations using a debugger
+     "watchpoint".  Allocations are a good "clock tick" for this test.
+     The test itself doesn't use the variable, so we declare it
+     volatile, which also forces updates into memory. */
+  static volatile unsigned long calls = 0;
   size_t length = rnd() % (scale * avLEN);
   size_t size = (length+2) * sizeof(mps_word_t);
   mps_addr_t p;
diff --git a/code/poolawl.c b/code/poolawl.c
index 3808c608a8..b9c15b9838 100644
--- a/code/poolawl.c
+++ b/code/poolawl.c
@@ -1057,7 +1057,7 @@ static void awlSegReclaim(Seg seg, Trace trace)
   Bool hasBuffer = SegBuffer(&buffer, seg);
   Format format = pool->format;
   Count reclaimedGrains = (Count)0;
-  Count preservedInPlaceCount = (Count)0;
+  STATISTIC_DECL(Count preservedInPlaceCount = (Count)0)
   Size preservedInPlaceSize = (Size)0;
   Index i;
 
@@ -1089,7 +1089,7 @@ static void awlSegReclaim(Seg seg, Trace trace)
       AVER(BTGet(awlseg->scanned, i));
       BTSetRange(awlseg->mark, i, j);
       BTSetRange(awlseg->scanned, i, j);
-      ++preservedInPlaceCount;
+      STATISTIC(++preservedInPlaceCount);
       preservedInPlaceSize += AddrOffset(p, q);
     } else {
       BTResRange(awlseg->mark, i, j);
diff --git a/code/poollo.c b/code/poollo.c
index 25295e604c..af72a50a8f 100644
--- a/code/poollo.c
+++ b/code/poollo.c
@@ -313,7 +313,7 @@ static void loSegReclaim(Seg seg, Trace trace)
   Bool hasBuffer = SegBuffer(&buffer, seg);
   Count reclaimedGrains = (Count)0;
   Format format = NULL; /* supress "may be used uninitialized" warning */
-  Count preservedInPlaceCount = (Count)0;
+  STATISTIC_DECL(Count preservedInPlaceCount = (Count)0)
   Size preservedInPlaceSize = (Size)0;
   Bool b;
 
@@ -355,7 +355,7 @@ static void loSegReclaim(Seg seg, Trace trace)
     q = (*format->skip)(AddrAdd(p, format->headerSize));
     q = AddrSub(q, format->headerSize);
     if(BTGet(loseg->mark, i)) {
-      ++preservedInPlaceCount;
+      STATISTIC(++preservedInPlaceCount);
       preservedInPlaceSize += AddrOffset(p, q);
     } else {
       Index j = PoolIndexOfAddr(base, pool, q);