Consider code like:
---
public class Err {

    record R(String x) {}

    public void(Object obj) {

        switch(obj) {

            case R(var v, ) -> 1;

        }

    }

}
---

javac may crash on this code:
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$ ./build/linux-x86_64-server-release/images/jdk/bin/javac -XDdev -XDshould-stop.at=FLOW /tmp/Err.java
/tmp/Err.java:5: error: <identifier> expected
    public void(Object obj) {
               ^
/tmp/Err.java:9: error: illegal start of type
            case R(var v, ) -> 1;
                          ^
/tmp/Err.java:9: error: not a statement
            case R(var v, ) -> 1;
                               ^
/tmp/Err.java:9: error: incorrect number of nested patterns
            case R(var v, ) -> 1;
                 ^
  required: String
  found: String,<any>
4 errors
An exception has occurred in the compiler (22-internal). Please file a bug against the Java compiler via the Java bug reporting page (https://bugreport.java.com) after checking the Bug Database (https://bugs.java.com) for duplicates. Include your program, the following diagnostic, and the parameters passed to the Java compiler in your report. Thank you.
java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for length 1
        at jdk.compiler/com.sun.tools.javac.comp.Flow.makePatternDescription(Flow.java:3483)
...
---