Add recursion checks for parse_interval

src/parser/mod.rs

@@ -3368,7 +3368,10 @@ impl<'a> Parser<'a> {
     /// ```
     ///
     /// Note that we do not currently attempt to parse the quoted value.
+    #[cfg_attr(feature = "recursive-protection", recursive::recursive)]
     pub fn parse_interval(&mut self) -> Result<Expr, ParserError> {
+        let _guard = self.recursion_counter.try_decrease()?;
+
         // The SQL standard allows an optional sign before the value string, but
         // it is not clear if any implementations support that syntax, so we
         // don't currently try to parse it. (The sign can instead be included

tests/sqlparser_common.rs

@@ -11419,6 +11419,20 @@ fn parse_deeply_nested_subquery_expr_hits_recursion_limits() {
     assert_eq!(res, Err(ParserError::RecursionLimitExceeded));
 }
 
+#[test]
+fn parse_deeply_nested_interval_hits_recursion_limits() {
+    let dialect = GenericDialect {};
+
+    let sql = format!("SELECT {}1", "INTERVAL ".repeat(1000));
+
+    let res = Parser::new(&dialect)
+        .try_with_sql(&sql)
+        .expect("tokenize to work")
+        .parse_statements();
+
+    assert_eq!(res, Err(ParserError::RecursionLimitExceeded));
+}
+
 #[test]
 fn parse_with_recursion_limit() {
     let dialect = GenericDialect {};