diff --git a/pvDataApp/factory/Convert.cpp b/pvDataApp/factory/Convert.cpp
index 2e7b982..a6efd37 100644
--- a/pvDataApp/factory/Convert.cpp
+++ b/pvDataApp/factory/Convert.cpp
@@ -195,7 +195,7 @@ template<>
 String scalarToString<uint32>(uint32 value)
 {
     char buffer[20];
-    sprintf(buffer,"%ud",value);
+    sprintf(buffer,"%ud",(unsigned int)value);
     return String(buffer);
 }
 
@@ -1089,19 +1089,19 @@ String Convert::toString(PVScalarPtr const & pv)
         case pvByte: {
             PVBytePtr value = static_pointer_cast<PVByte>(pv);
             char buffer[30];
-            sprintf(buffer,"%d",(int32)value->get());
+            sprintf(buffer,"%d",(int)value->get());
             return String(buffer);
         }
         case pvShort: {
             PVShortPtr value = static_pointer_cast<PVShort>(pv);
             char buffer[30];
-            sprintf(buffer,"%d",(int32)value->get());
+            sprintf(buffer,"%d",(int)value->get());
             return String(buffer);
         }
         case pvInt: {
             PVIntPtr value = static_pointer_cast<PVInt>(pv);
             char buffer[30];
-            sprintf(buffer,"%d",(int32)value->get());
+            sprintf(buffer,"%d",(int)value->get());
             return String(buffer);
         }
         case pvLong: {
@@ -1113,19 +1113,19 @@ String Convert::toString(PVScalarPtr const & pv)
         case pvUByte: {
             PVUBytePtr value = static_pointer_cast<PVUByte>(pv);
             char buffer[30];
-            sprintf(buffer,"%u",(uint32)value->get());
+            sprintf(buffer,"%u",(unsigned int)value->get());
             return String(buffer);
         }
         case pvUShort: {
             PVUShortPtr value = static_pointer_cast<PVUShort>(pv);
             char buffer[30];
-            sprintf(buffer,"%u",(uint32)value->get());
+            sprintf(buffer,"%u",(unsigned int)value->get());
             return String(buffer);
         }
         case pvUInt: {
             PVUIntPtr value = static_pointer_cast<PVUInt>(pv);
             char buffer[30];
-            sprintf(buffer,"%u",value->get());
+            sprintf(buffer,"%u",(unsigned int)value->get());
             return String(buffer);
         }
         case pvULong: {
@@ -1143,7 +1143,7 @@ String Convert::toString(PVScalarPtr const & pv)
         case pvDouble: {
             PVDoublePtr value = static_pointer_cast<PVDouble>(pv);
             char buffer[30];
-            sprintf(buffer,"%lg",value->get());
+            sprintf(buffer,"%g",value->get());
             return String(buffer);
         }
         case pvString: {
@@ -2685,7 +2685,7 @@ void convertToString(StringBuilder buffer,PVField const * pv,int indentLevel)
     case pvDouble: {
             PVDouble const  *data = static_cast<PVDouble const *>(pv);
             char xxx[30];
-            sprintf(xxx,"%lg",data->get());
+            sprintf(xxx,"%g",data->get());
             *buffer += xxx;
         }
         return;
@@ -2926,7 +2926,7 @@ void convertArray(StringBuilder buffer,PVScalarArray const * xxx,int indentLevel
                 if(num==1) {
                      double val = data.data[data.offset];
                      char buf[16];
-                     sprintf(buf,"%lg",val);
+                     sprintf(buf,"%g",val);
                      *buffer += buf;
                 } else {
                      *buffer += "???? ";
diff --git a/pvDataApp/misc/bitSet.cpp b/pvDataApp/misc/bitSet.cpp
index 4624652..4576ddb 100644
--- a/pvDataApp/misc/bitSet.cpp
+++ b/pvDataApp/misc/bitSet.cpp
@@ -337,10 +337,10 @@ namespace epics { namespace pvData {
         int32 i = nextSetBit(0);
         char tmp[30];
         if (i != -1) {
-            sprintf(tmp,"%d",i); *buffer += tmp;
+            sprintf(tmp,"%d",(int)i); *buffer += tmp;
             for (i = nextSetBit(i+1); i >= 0; i = nextSetBit(i+1)) {
                 int32 endOfRun = nextClearBit(i);
-                do { *buffer += ", "; sprintf(tmp,"%d",i); *buffer += tmp; } while (++i < endOfRun);
+                do { *buffer += ", "; sprintf(tmp,"%d",(int)i); *buffer += tmp; } while (++i < endOfRun);
             }
         }
         *buffer += '}';
diff --git a/testApp/misc/testTimeStamp.cpp b/testApp/misc/testTimeStamp.cpp
index a0f48dd..d2a044f 100644
--- a/testApp/misc/testTimeStamp.cpp
+++ b/testApp/misc/testTimeStamp.cpp
@@ -32,10 +32,10 @@ void testTimeStamp(FILE *fd,FILE *auxfd)
     assert(nanoSecPerSec==1000000000);
     TimeStamp current;
     current.getCurrent();
-    fprintf(auxfd,"current %lli %i milliSec %li\n",
-        current.getSecondsPastEpoch(),
+    fprintf(auxfd,"current %lli %i milliSec %lli\n",
+        (long long)current.getSecondsPastEpoch(),
         current.getNanoSeconds(),
-        current.getMilliseconds());
+        (long long)current.getMilliseconds());
     time_t tt;
     current.toTime_t(tt);
     struct tm ctm;
@@ -48,10 +48,10 @@ void testTimeStamp(FILE *fd,FILE *auxfd)
         (ctm.tm_isdst==0) ? "false" : "true");
     tt = time(&tt);
     current.fromTime_t(tt);
-    fprintf(auxfd,"fromTime_t\ncurrent %lli %i milliSec %li\n",
-        current.getSecondsPastEpoch(),
+    fprintf(auxfd,"fromTime_t\ncurrent %lli %i milliSec %lli\n",
+        (long long)current.getSecondsPastEpoch(),
         current.getNanoSeconds(),
-        current.getMilliseconds());
+        (long long)current.getMilliseconds());
     current.toTime_t(tt);
     memcpy(&ctm,localtime(&tt),sizeof(struct tm));
     fprintf(auxfd,
diff --git a/testApp/pv/testPVAuxInfo.cpp b/testApp/pv/testPVAuxInfo.cpp
index fb1a0e0..cb98403 100644
--- a/testApp/pv/testPVAuxInfo.cpp
+++ b/testApp/pv/testPVAuxInfo.cpp
@@ -52,9 +52,9 @@ static void printOffsets(PVStructurePtr pvStructure,FILE *fd)
         }
         fprintf(fd,"%s offset %lli next %lli number %lli\n",
             pvField->getFieldName().c_str(),
-            pvField->getFieldOffset(),
-            pvField->getNextFieldOffset(),
-            pvField->getNumberFields());
+            (long long)pvField->getFieldOffset(),
+            (long long)pvField->getNextFieldOffset(),
+            (long long)pvField->getNumberFields());
     }
 }
 
diff --git a/testApp/pv/testPVScalarArray.cpp b/testApp/pv/testPVScalarArray.cpp
index c787269..e709831 100644
--- a/testApp/pv/testPVScalarArray.cpp
+++ b/testApp/pv/testPVScalarArray.cpp
@@ -143,20 +143,20 @@ static void longArray()
     LongArray_iterator iter = data.data.begin();
     if(debug) fprintf(fd,"iter  [");
     for(iter=data.data.begin();iter!=data.data.end();++iter) {
-         if(debug) fprintf(fd,"%lli ",*iter);
+         if(debug) fprintf(fd,"%lli ",(long long)*iter);
     }
     if(debug) fprintf(fd,"]\n");
     if(debug) fprintf(fd,"raw   [");
     int64 * pdata = get(data.data);
     for(size_t i=0; i<length; i++) {
          int64 val = pdata[i];
-         if(debug) fprintf(fd,"%lli  ",val);
+         if(debug) fprintf(fd,"%lli  ",(long long)val);
     }
     if(debug) fprintf(fd,"]\n");
     if(debug) fprintf(fd,"direct[");
     for(size_t i=0; i<length; i++) {
          int64 val = data.data[i];
-         if(debug) fprintf(fd,"%lli ",val);
+         if(debug) fprintf(fd,"%lli ",(long long)val);
     }
     if(debug) fprintf(fd,"]\n");
     fprintf(fd,"longArray PASSED\n");
@@ -184,20 +184,20 @@ static void ulongArray()
     ULongArray_iterator iter = data.data.begin();
     if(debug) fprintf(fd,"iter  [");
     for(iter=data.data.begin();iter!=data.data.end();++iter) {
-         if(debug) fprintf(fd,"%llu ",*iter);
+         if(debug) fprintf(fd,"%llu ",(long long unsigned)*iter);
     }
     if(debug) fprintf(fd,"]\n");
     if(debug) fprintf(fd,"raw   [");
     uint64 * pdata = get(data.data);
     for(size_t i=0; i<length; i++) {
          uint64 val = pdata[i];
-         if(debug) fprintf(fd,"%llu  ",val);
+         if(debug) fprintf(fd,"%llu  ",(long long unsigned)val);
     }
     if(debug) fprintf(fd,"]\n");
     if(debug) fprintf(fd,"direct[");
     for(size_t i=0; i<length; i++) {
          uint64 val = data.data[i];
-         if(debug) fprintf(fd,"%llu ",val);
+         if(debug) fprintf(fd,"%llu ",(long long unsigned)val);
     }
     if(debug) fprintf(fd,"]\n");
     fprintf(fd,"ulongArray PASSED\n");
diff --git a/testApp/pv/testPVType.cpp b/testApp/pv/testPVType.cpp
index 9409a28..582775d 100644
--- a/testApp/pv/testPVType.cpp
+++ b/testApp/pv/testPVType.cpp
@@ -62,10 +62,10 @@ int main(int argc,char *argv[])
     int64 longInt = 0x7fffffff;
     longInt <<= 32;
     longInt |= 0xffffffff;
-    fprintf(fd,"int8 max %lli",longInt);
+    fprintf(fd,"int8 max %lli",(long long)longInt);
     longInt = intValue = 0x80000000;;
     longInt <<= 32;
-    fprintf(fd," min %lli\n",longInt);
+    fprintf(fd," min %lli\n",(long long)longInt);
 
     fprintf(fd,"PASSED\n");
     return(0);