--- old/test/hotspot/jtreg/compiler/graalunit/common/GraalUnitTestLauncher.java	2019-04-15 16:37:18.419270482 +0200
+++ new/test/hotspot/jtreg/compiler/graalunit/common/GraalUnitTestLauncher.java	2019-04-15 16:37:18.143269586 +0200
@@ -241,6 +241,8 @@
         javaFlags.add("-ea");
         // Make sure exception message is never null
         javaFlags.add("-XX:-OmitStackTraceInFastThrow");
+        // GC tests require never exiting VM on OOME. Epsilon enables it ergonomically.
+        javaFlags.add("-XX:-ExitOnOutOfMemoryError");
         // set timeout factor based on jtreg harness settings
         javaFlags.add("-Dgraaltest.timeout.factor=" + System.getProperty("test.timeout.factor", "1.0"));