snuyanzin commented on code in PR #27431:
URL: https://github.com/apache/flink/pull/27431#discussion_r2701089719
##########
flink-table/flink-sql-parser/src/main/java/org/apache/flink/sql/parser/type/ExtendedSqlRowTypeNameSpec.java:
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@@ -121,7 +121,8 @@ public void unparse(SqlWriter writer, int leftPrec, int
rightPrec) {
if (p.right.getNullable() != null && !p.right.getNullable()) {
writer.keyword("NOT NULL");
}
- if (comments.get(i) != null) {
+ // With bounds check - prevents IndexOutOfBoundsException
+ if (i < comments.size() && comments.get(i) != null) {
Review Comment:
probably also need a test for that
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