test/hotspot/jtreg/runtime/Thread/TooSmallStackSize.java

rev 54472 : 8222334: java -Xss0 triggers StackOverflowError
Summary: Launcher to use the ThreadStackSize decided by hotpot or system if input is 0
Reviewed-by: dholmes

@@ -185,21 +185,28 @@
          * Now try with a stack size that is not page aligned.
          */
         checkMinStackAllowed("-XX:ThreadStackSize=", ThreadStackSizeString, "513");
 
         /*
+         * Try with 0k which indicates that the default thread stack size from JVM will be used
+         */
+        checkMinStackAllowed("-XX:ThreadStackSize=", ThreadStackSizeString, "0");
+
+        /*
          * Now redo the same tests with the compiler thread stack size:
          */
         checkStack("-XX:CompilerThreadStackSize=", CompilerThreadStackSizeString, "16");
         min_stack_allowed = checkStack("-XX:CompilerThreadStackSize=", CompilerThreadStackSizeString, "64");
         checkMinStackAllowed("-XX:CompilerThreadStackSize=", CompilerThreadStackSizeString, min_stack_allowed);
         checkMinStackAllowed("-XX:CompilerThreadStackSize=", CompilerThreadStackSizeString, "513");
+        checkMinStackAllowed("-XX:CompilerThreadStackSize=", CompilerThreadStackSizeString, "0");
 
         /*
          * Now redo the same tests with the VM thread stack size:
          */
         checkStack("-XX:VMThreadStackSize=", VMThreadStackSizeString, "16");
         min_stack_allowed = checkStack("-XX:VMThreadStackSize=", VMThreadStackSizeString, "64");
         checkMinStackAllowed("-XX:VMThreadStackSize=", VMThreadStackSizeString, min_stack_allowed);
         checkMinStackAllowed("-XX:VMThreadStackSize=", VMThreadStackSizeString, "513");
+        checkMinStackAllowed("-XX:VMThreadStackSize=", VMThreadStackSizeString, "0");
     }
 }