diff --git a/src/compiler/CompilerUtility.h b/src/compiler/CompilerUtility.h
index 41f6cf1..f7b9b0e 100644
--- a/src/compiler/CompilerUtility.h
+++ b/src/compiler/CompilerUtility.h
@@ -43,11 +43,14 @@
 void oatArenaReset(CompilationUnit *cUnit);
 
 struct GrowableList {
-    size_t numAllocated;
-    size_t numUsed;
-    intptr_t *elemList;
+  GrowableList() : numAllocated(0), numUsed(0), elemList(NULL) {
+  }
+
+  size_t numAllocated;
+  size_t numUsed;
+  intptr_t* elemList;
 #ifdef WITH_MEMSTATS
-    oatListKind kind;
+  oatListKind kind;
 #endif
 };