src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/FoldConstants.java

*** 229,248 ****
              final boolean rhsInteger = rhsType.isInteger() || rhsType.isBoolean();
  
              LiteralNode<?> literalNode;
  
              switch (parent.tokenType()) {
!             case ADD:
                  if (rhsInteger) {
                      literalNode = LiteralNode.newInstance(token, finish, rhs.getInt32());
                  } else if (rhsType.isLong()) {
                      literalNode = LiteralNode.newInstance(token, finish, rhs.getLong());
                  } else {
                      literalNode = LiteralNode.newInstance(token, finish, rhs.getNumber());
                  }
                  break;
!             case SUB:
                  if (rhsInteger && rhs.getInt32() != 0) { // @see test/script/basic/minuszero.js
                      literalNode = LiteralNode.newInstance(token, finish, -rhs.getInt32());
                  } else if (rhsType.isLong() && rhs.getLong() != 0L) {
                      literalNode = LiteralNode.newInstance(token, finish, -rhs.getLong());
                  } else {
--- 229,248 ----
              final boolean rhsInteger = rhsType.isInteger() || rhsType.isBoolean();
  
              LiteralNode<?> literalNode;
  
              switch (parent.tokenType()) {
!             case POS:
                  if (rhsInteger) {
                      literalNode = LiteralNode.newInstance(token, finish, rhs.getInt32());
                  } else if (rhsType.isLong()) {
                      literalNode = LiteralNode.newInstance(token, finish, rhs.getLong());
                  } else {
                      literalNode = LiteralNode.newInstance(token, finish, rhs.getNumber());
                  }
                  break;
!             case NEG:
                  if (rhsInteger && rhs.getInt32() != 0) { // @see test/script/basic/minuszero.js
                      literalNode = LiteralNode.newInstance(token, finish, -rhs.getInt32());
                  } else if (rhsType.isLong() && rhs.getLong() != 0L) {
                      literalNode = LiteralNode.newInstance(token, finish, -rhs.getLong());
                  } else {