diff --git a/ChangeLog b/ChangeLog
index 482c029c2..f9e06dd6a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2010-11-06  Robert Larice
+ * src/frontend/outitf.c ,
+ * src/frontend/plotting/grid.c ,
+ * src/misc/string.c ,
+ * src/spicelib/devices/cktcrte.c :
+    add some `int' and `size_t' casts
+
 2010-11-06  Robert Larice
  * src/frontend/measure.c ,
  * src/frontend/outitf.c ,
diff --git a/src/frontend/outitf.c b/src/frontend/outitf.c
index 8f0a5fa54..51b73204e 100644
--- a/src/frontend/outitf.c
+++ b/src/frontend/outitf.c
@@ -820,9 +820,10 @@ fileInit_pass2(runDesc *run)
     /*  Allocate Row buffer  */
 
     if (run->binary) {
-      rowbuflen=(run->numData)*sizeof(double);
-      if (run->isComplex) rowbuflen *=2;
-      rowbuf=(double *)tmalloc(rowbuflen);
+        rowbuflen = (size_t) (run->numData) * sizeof(double);
+        if (run->isComplex)
+            rowbuflen *= 2;
+        rowbuf = (double *) tmalloc(rowbuflen);
     } else rowbuf=NULL;
 
     return;
diff --git a/src/frontend/plotting/grid.c b/src/frontend/plotting/grid.c
index d49b060a9..1c27d153c 100644
--- a/src/frontend/plotting/grid.c
+++ b/src/frontend/plotting/grid.c
@@ -324,7 +324,7 @@ lingrid(GRAPH *graph, double lo, double hi, double delta, int type, Axis axis)
 
 	if (i < 0)
 		i = 6; /* No scale units */
-	else if (i >= sizeof(scaleletters) - 1) {
+	else if (i >= (int) sizeof(scaleletters) - 1) {
 		/* sizeof includes '\0' at end, which is useless */
 		/* i = sizeof(scaleletters) - 2; */
 		i = 6; /* No scale units */
diff --git a/src/misc/string.c b/src/misc/string.c
index da33d2519..06d674503 100644
--- a/src/misc/string.c
+++ b/src/misc/string.c
@@ -36,7 +36,7 @@ copy(const char *str)
 char *
 copy_substring(const char *str, const char *end)
 {
-    int n = end - str;
+    size_t n = (size_t) (end - str);
     char *p;
 
     if ((p = TMALLOC(char, n + 1))) {
diff --git a/src/spicelib/devices/cktcrte.c b/src/spicelib/devices/cktcrte.c
index f67f5896c..05ca999ac 100644
--- a/src/spicelib/devices/cktcrte.c
+++ b/src/spicelib/devices/cktcrte.c
@@ -46,7 +46,7 @@ CKTcrtElt(CKTcircuit *ckt, GENmodel *inModPtr, GENinstance **inInstPtr, IFuid na
     printf("In CKTcrtElt, about to tmalloc new model, type = %d. . . \n", type);
 #endif
 
-    instPtr = (GENinstance *) tmalloc(*DEVices[type]->DEVinstSize);
+    instPtr = (GENinstance *) tmalloc((size_t) *DEVices[type]->DEVinstSize);
     if (instPtr == (GENinstance *)NULL)
 	return E_NOMEM;