Fix issue with named backrefs; add needed import

2026-02-28 21:03:50 +01:00 · 2022-05-04 15:39:51 +01:00
parent 2d82dfba38
commit c7d30087d1
3 changed files with 5 additions and 1 deletions
--- a/java/ql/lib/semmle/code/java/regex/RegexTreeView.qll
+++ b/java/ql/lib/semmle/code/java/regex/RegexTreeView.qll
@@ -258,6 +258,9 @@ class RegExpQuantifier extends RegExpTerm, TRegExpQuantifier {
    result.occursInRegex(re, start, part_end)
  }

+  /** Holds if this term may match zero times. */
+  predicate mayBeEmpty() { maybe_empty = true }
+
  /** Holds if this term may match an unlimited number of times. */
  predicate mayRepeatForever() { may_repeat_forever = true }