On Tue, 4 Nov 2025 09:01:36 GMT, Ioi Lam <[email protected]> wrote: >> In the previous fix (https://github.com/openjdk/jdk/pull/28035), I added >> `OutputAnalyzer::match(String regexp)`, but it uses `String.matches()` which >> has different semantics than the existing "match" functions such as >> `OutputAnalyzer::shouldMatch()`. >> >> `String.matches()` is a poor choice for matching the stdout/stderr in >> `OutputAnalyzer`: >> >> - It requires a full match, so you need to use >> `haystackString.matches(".*needle.*")` >> - But `.*` doesn't match across newlines, so it's basically useless for most >> program output. >> >> That's why the pattern in the previous fix in >> AccessZeroNKlassHitsProtectionZone.java >> (https://github.com/openjdk/jdk/pull/28035) doesn't work: >> >> https://github.com/openjdk/jdk/blame/e4aed95cac343f1339b9bc87721561bdc4c2f5ad/test/hotspot/jtreg/runtime/ErrorHandling/AccessZeroNKlassHitsProtectionZone.java#L146 >> >> I fixed this by re-working `OutputAnalyzer::match()`, etc, to do the same >> thing as `OutputAnalyzer::shouldMatch()`. I also refactored the code to >> consolidate most of the regexp handling code to the two `matchesHelper()` >> methods. > > Ioi Lam has updated the pull request incrementally with one additional commit > since the last revision: > > Refactored the various "match" methods in OutputAnalyzer; added tests; > reverted changes in AccessZeroNKlassHitsProtectionZone.java
Hi Stefan, thanks for looking into this. > So, I would prefer to see the following: > > 1. Fix the title to indicate that your updating the OutputAnalyzer > 2. Fix the summary that states that MULTILINE is needed to match over newlines > 3. Introduce the new "find" function (or rename matches) > 4. Add tests > 5. Preferably, use one RFE for the above enhancements and Bug for the test > failure I fixed the title, updated the summary and added test cases. I didn't use "find", as all the existing methods in OutputAnalyzer use "match". The bug is in OutputAnalyzer only. The test case AccessZeroNKlassHitsProtectionZone.java is correct in its current form. So I will use this PR to fix `OutputAnalyzer.matches()`. ------------- PR Comment: https://git.openjdk.org/jdk/pull/28077#issuecomment-3484765891
