S390: Printf format specifier for size_t

src/heap/gc-idle-time-handler.cc

Index: src/heap/gc-idle-time-handler.cc
diff --git a/src/heap/gc-idle-time-handler.cc b/src/heap/gc-idle-time-handler.cc
index 4e6e6081d7bf4e4e7504ae8224c5d510f925d448..f09ca1bc3023b32821775d59a38e4547214a1324 100644
--- a/src/heap/gc-idle-time-handler.cc
+++ b/src/heap/gc-idle-time-handler.cc
@@ -42,7 +42,8 @@ void GCIdleTimeAction::Print() {
 void GCIdleTimeHeapState::Print() {
   PrintF("contexts_disposed=%d ", contexts_disposed);
   PrintF("contexts_disposal_rate=%f ", contexts_disposal_rate);
-  PrintF("size_of_objects=%" V8_PTR_PREFIX "d ", size_of_objects);
+  PrintF("size_of_objects=%" V8_SIZET_PREFIX V8_PTR_PREFIX "d ",
+         size_of_objects);
   PrintF("incremental_marking_stopped=%d ", incremental_marking_stopped);
 }