diff --git a/src/bpt/makeBpt.c b/src/bpt/makeBpt.c
index cf5c4218d..26e91eea7 100644
--- a/src/bpt/makeBpt.c
+++ b/src/bpt/makeBpt.c
@@ -62,7 +62,7 @@ static int getNumber(char **pbeg, double *value)
 {
     int	 nchars=0;
 
-    while(isspace(**pbeg) && **pbeg!= '\0') (*pbeg)++;
+    while(isspace((int)**pbeg) && **pbeg!= '\0') (*pbeg)++;
     if(**pbeg == '!' || **pbeg == '\0') return(-1);
     if(sscanf(*pbeg,"%lf%n",value,&nchars)!=1) return(-1);
     *pbeg += nchars;
@@ -130,7 +130,7 @@ int main(argc, argv)
 	linenum++;
 	inbuf[strlen(inbuf)] = '\0'; /* remove newline*/
 	pbeg = inbuf;
-	while(isspace(*pbeg) && *pbeg!= '\0') pbeg++;
+	while(isspace((int)*pbeg) && *pbeg!= '\0') pbeg++;
 	if(*pbeg == '!' || *pbeg == '\0') continue;
 	while(*pbeg!='"' && *pbeg!= '\0') pbeg++;
 	if(*pbeg!='"' ) errExit("Illegal Header");
diff --git a/src/db/initHooks.c b/src/db/initHooks.c
index 2468a16cb..0168ae2c0 100644
--- a/src/db/initHooks.c
+++ b/src/db/initHooks.c
@@ -29,7 +29,7 @@ typedef struct initHookLink {
 	initHookFunction func;
 } initHookLink;
 
-static functionListInited = FALSE;
+static int functionListInited = FALSE;
 static ELLLIST functionList;
 
 static void initFunctionList(void)
diff --git a/src/dbStatic/dbStaticLib.c b/src/dbStatic/dbStaticLib.c
index 5668ded39..fd0b35a54 100644
--- a/src/dbStatic/dbStaticLib.c
+++ b/src/dbStatic/dbStaticLib.c
@@ -777,7 +777,7 @@ long epicsShareAPI dbAddPath(DBBASE *pdbbase,const char *path)
 	int len;
 		
 	/* preceding white space is removed */
-	if (isspace(*path)) {
+	if (isspace((int)*path)) {
 	    path++;
 	    continue;
 	}
@@ -795,7 +795,7 @@ long epicsShareAPI dbAddPath(DBBASE *pdbbase,const char *path)
 	    expectingPath = FALSE;
 	}
 	/* trailing white space is removed */
-	while (isspace(*plast)) {
+	while (isspace((int)*plast)) {
 		plast--;
 	}
 
diff --git a/src/rsrv/caservertask.c b/src/rsrv/caservertask.c
index 898d71247..a13723582 100644
--- a/src/rsrv/caservertask.c
+++ b/src/rsrv/caservertask.c
@@ -460,15 +460,17 @@ void epicsShareAPI casr (unsigned level)
         bytes_reserved += rsrvSizeOfPutNotify ( 0 ) * 
                     freeListItemsAvail ( rsrvPutNotifyFreeList );
         printf( "There are currently %u bytes on the server's free list\n",
-            bytes_reserved);
+            (unsigned int) bytes_reserved);
         printf( "%u client(s), %u channel(s), %u event(s) (monitors) %u putNotify(s)\n",
-            freeListItemsAvail (rsrvClientFreeList),
-            freeListItemsAvail (rsrvChanFreeList),
-            freeListItemsAvail (rsrvEventFreeList),
-            freeListItemsAvail ( rsrvPutNotifyFreeList ));
+            (unsigned int) freeListItemsAvail ( rsrvClientFreeList ),
+            (unsigned int) freeListItemsAvail ( rsrvChanFreeList ),
+            (unsigned int) freeListItemsAvail ( rsrvEventFreeList ),
+            (unsigned int) freeListItemsAvail ( rsrvPutNotifyFreeList ));
         printf( "%u small buffers (%u bytes ea), and %u jumbo buffers (%u bytes ea)\n",
-            freeListItemsAvail ( rsrvSmallBufFreeListTCP ), MAX_TCP,
-            freeListItemsAvail ( rsrvLargeBufFreeListTCP ), rsrvSizeofLargeBufTCP );
+            (unsigned int) freeListItemsAvail ( rsrvSmallBufFreeListTCP ),
+            MAX_TCP,
+            (unsigned int) freeListItemsAvail ( rsrvLargeBufFreeListTCP ),
+            rsrvSizeofLargeBufTCP );
         if(pCaBucket){
             printf( "The server's resource id conversion table:\n");
             LOCK_CLIENTQ;