diff -ur ../kcachegrind-4.14.3-orig/libcore/tracedata.cpp ./libcore/tracedata.cpp
--- ../kcachegrind-4.14.3-orig/libcore/tracedata.cpp	2014-07-24 06:36:47.000000000 +0900
+++ ./libcore/tracedata.cpp	2019-10-05 23:44:37.000000000 +0900
@@ -3259,7 +3259,7 @@
 
 void TraceData::addPart(TracePart* part)
 {
-    if (_parts.contains(part)>0) return;
+    if (_parts.contains(part)!=NULL) return;
 
     if ((part->partNumber()==0) &&
         (part->processID()==0)) {