8244714: G1 young gen sizer allows zero young gen with huge -XX:NewRatio

Reviewed-by: sjohanss
openjdk · May 13, 2020 · 0dab181 · 0dab181
1 parent 7345502
commit 0dab181
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/hotspot/share/gc/g1/g1YoungGenSizer.cpp b/src/hotspot/share/gc/g1/g1YoungGenSizer.cpp
@@ -102,7 +102,7 @@ void G1YoungGenSizer::recalculate_min_max_young_length(uint number_of_heap_regio
       // Do nothing. Values set on the command line, don't update them at runtime.
       break;
     case SizerNewRatio:
-      *min_young_length = number_of_heap_regions / (NewRatio + 1);
+      *min_young_length = MAX2((uint)(number_of_heap_regions / (NewRatio + 1)), 1u);
       *max_young_length = *min_young_length;
       break;
     default: