--- old/src/hotspot/share/runtime/flags/jvmFlagConstraintList.cpp	2020-06-26 01:00:56.732980293 +0000
+++ new/src/hotspot/share/runtime/flags/jvmFlagConstraintList.cpp	2020-06-26 01:00:56.428976045 +0000
@@ -172,6 +172,23 @@
   }
 };
 
+class JVMFlagConstraint_ccstrlist : public JVMFlagConstraint {
+  JVMFlagConstraintFunc_ccstrlist _constraint;
+
+public:
+  JVMFlagConstraint_ccstrlist(const JVMFlag* flag,
+                           JVMFlagConstraintFunc_ccstrlist func,
+                           ConstraintType type) : JVMFlagConstraint(flag, type), _constraint(func) {}
+
+  JVMFlag::Error apply(bool verbose) {
+    return _constraint(_flag->get_ccstr(), verbose);
+  }
+
+  JVMFlag::Error apply_ccstrlist(ccstrlist value, bool verbose) {
+    return _constraint(value, verbose);
+  }
+};
+
 // No constraint emitting
 void emit_constraint_no(...)                            { /* NOP */ }
 
@@ -212,6 +229,9 @@
 void emit_constraint_double(const JVMFlag* flag, JVMFlagConstraintFunc_double func, JVMFlagConstraint::ConstraintType type) {
   JVMFlagConstraintList::add(new JVMFlagConstraint_double(flag, func, type));
 }
+void emit_constraint_ccstrlist(const JVMFlag* flag, JVMFlagConstraintFunc_ccstrlist func, JVMFlagConstraint::ConstraintType type) {
+  JVMFlagConstraintList::add(new JVMFlagConstraint_ccstrlist(flag, func, type));
+}
 
 // Generate code to call emit_constraint_xxx function
 #define EMIT_CONSTRAINT_START       (void)(0