ADDITIONAL SYSTEM INFORMATION :
JDK 21.0.2

A DESCRIPTION OF THE PROBLEM :
Similar bug to https://bugs.openjdk.org/browse/JDK-8268670

A yield expression with cast to generic type with more than 1 type argument fails to compile.

For example,

   yield (Map<String, String>) obj;

doesn't compile, while a cast expression with just 1 type arguments works:

   yield (List<String>) obj;

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Try compiling provided source code example

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The program compiles successfully
ACTUAL -
> javac YieldWith2TypeArguments.java

YieldWith2TypeArguments.java:8: error: illegal start of expression
                yield (Map<String, String>) value;
                                          ^
YieldWith2TypeArguments.java:8: error: invalid use of a restricted identifier 'yield'
                yield (Map<String, String>) value;
                ^
  (to invoke a method called yield, qualify the yield with a receiver or type name)
YieldWith2TypeArguments.java:8: error: ';' expected
                yield (Map<String, String>) value;
                                           ^
YieldWith2TypeArguments.java:8: error: not a statement
                yield (Map<String, String>) value;
                                            ^
4 errors


---------- BEGIN SOURCE ----------
import java.util.*;

class YieldWith2TypeArguments {
    public static void main(String[] args) {
        Object value = new HashMap<String, String>();
        Object returnedValue = switch (1) {
            default -> {
                yield (Map<String, String>) value;
            }
        };
    }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Wrap the expression into parenthesized expression:
  yield ((Map<String, String>) obj);

FREQUENCY : always