diff --git a/liberty/LibertyReader.cc b/liberty/LibertyReader.cc
index da39bca3..6298ca12 100644
--- a/liberty/LibertyReader.cc
+++ b/liberty/LibertyReader.cc
@@ -261,6 +261,9 @@ LibertyReader::defineVisitors()
   defineAttrVisitor("index_2", &LibertyReader::visitIndex2);
   defineAttrVisitor("index_3", &LibertyReader::visitIndex3);
 
+  defineGroupVisitor("technology",
+                     &LibertyReader::beginTechnology,
+                     &LibertyReader::endTechnology);
   defineGroupVisitor("rise_transition_degradation",
 		     &LibertyReader::beginRiseTransitionDegredation,
 		     &LibertyReader::endRiseFallTransitionDegredation);
@@ -651,6 +654,7 @@ LibertyReader::beginLibrary(LibertyGroup *group)
     library_->units()->currentUnit()->setScale(current_scale_);
     library_->units()->distanceUnit()->setScale(distance_scale_);
 
+    library_->setDelayModelType(DelayModelType::cmos_linear);
     scale_factors_ = new ScaleFactors("");
     library_->setScaleFactors(scale_factors_);
   }
@@ -1331,6 +1335,21 @@ LibertyReader::visitSlewDerateFromLibrary(LibertyAttr *attr)
 
 ////////////////////////////////////////////////////////////////
 
+void
+LibertyReader::beginTechnology(LibertyGroup *group)
+{
+  if (library_) {
+    const char *tech = group->firstName();
+     if (stringEq(tech, "fpga"))
+       library_->setDelayModelType(DelayModelType::cmos_linear);
+  }
+}
+
+void
+LibertyReader::endTechnology(LibertyGroup *)
+{
+}
+
 void
 LibertyReader::beginTableTemplateDelay(LibertyGroup *group)
 {
diff --git a/liberty/LibertyReaderPvt.hh b/liberty/LibertyReaderPvt.hh
index fec56d33..780cee5b 100644
--- a/liberty/LibertyReaderPvt.hh
+++ b/liberty/LibertyReaderPvt.hh
@@ -144,6 +144,8 @@ public:
 					  RiseFall *rf);
   virtual void visitSlewDerateFromLibrary(LibertyAttr *attr);
 
+  virtual void beginTechnology(LibertyGroup *group);
+  virtual void endTechnology(LibertyGroup *group);
   virtual void beginTableTemplateDelay(LibertyGroup *group);
   virtual void beginTableTemplateOutputCurrent(LibertyGroup *group);
   virtual void beginTableTemplate(LibertyGroup *group,
diff --git a/util/StringUtil.cc b/util/StringUtil.cc
index a20ac4a8..02c5edfc 100644
--- a/util/StringUtil.cc
+++ b/util/StringUtil.cc
@@ -158,7 +158,6 @@ stringPrintTmp(const char *fmt,
 
   if (tmp_length >= tmp_length1) {
     tmp_length1 = tmp_length + 1;
-    stringDelete(tmp);
     tmp = makeTmpString(tmp_length1);
     va_copy(args_copy, args);
     tmp_length = vsnprint(tmp, tmp_length1, fmt, args_copy);