> Reduces excessive allocation of Matcher.groups array when the original > Pattern has no groups or less than 9 groups. > > Original clamping to 10 possibly due to documented behavior from javadoc: > "In this class, \1 through \9 are always interpreted as back references, " > > Only with Matcher changes RegExTest.backRefTest fails when backreferences to > non-existing groups are present. > Added a match failure condition in Pattern that fixes failing tests. > > As per existing `java.util.regex.Pattern.BackRef#match`: "// If the > referenced group didn't match, neither can this" > > A group that does not exist in the original Pattern can never match so > neither can a backref to that group. > If the group existed in the original Pattern then it would have had space > allocated in Matcher.groups for that group index. > So a group index outside groups array length must never match.
Cristian Vat has updated the pull request incrementally with one additional commit since the last revision: changes and test for CIBackRef ------------- Changes: - all: https://git.openjdk.org/jdk/pull/14894/files - new: https://git.openjdk.org/jdk/pull/14894/files/4c6c3ec0..b591b2ba Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=14894&range=03 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14894&range=02-03 Stats: 58 lines in 2 files changed: 58 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/14894.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/14894/head:pull/14894 PR: https://git.openjdk.org/jdk/pull/14894
