--- old/test/hotspot/jtreg/gc/shenandoah/options/TestHumongousThresholdArgs.java	2020-06-17 13:38:26.228012710 +0200
+++ new/test/hotspot/jtreg/gc/shenandoah/options/TestHumongousThresholdArgs.java	2020-06-17 13:38:25.948005122 +0200
@@ -38,7 +38,9 @@
 public class TestHumongousThresholdArgs {
     public static void main(String[] args) throws Exception {
         {
-            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UnlockExperimentalVMOptions",
+            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+                    "-Xmx128m",
+                    "-XX:+UnlockExperimentalVMOptions",
                     "-XX:+UseShenandoahGC",
                     "-version");
             OutputAnalyzer output = new OutputAnalyzer(pb.start());
@@ -49,7 +51,9 @@
         int[] invalid = new int[] {-100, -1, 0, 101, 1000};
 
         for (int v : valid) {
-            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UnlockExperimentalVMOptions",
+            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+                    "-Xmx128m",
+                    "-XX:+UnlockExperimentalVMOptions",
                     "-XX:+UseShenandoahGC",
                     "-XX:ShenandoahHumongousThreshold=" + v,
                     "-version");
@@ -58,7 +62,9 @@
         }
 
         for (int v : invalid) {
-            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UnlockExperimentalVMOptions",
+            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+                    "-Xmx128m",
+                    "-XX:+UnlockExperimentalVMOptions",
                     "-XX:+UseShenandoahGC",
                     "-XX:ShenandoahHumongousThreshold=" + v,
                     "-version");