whitepaper: 312 sites / 151 ecosystems — wave2+3 defect tables and PDF rebuild
Add 88 new defect entries to HIGH and MEDIUM tables:
HIGH: mysql-0001/0002, mariadb-0001, redis-0001/0002, valkey-0001/0002, openvpn-0001,
vlc-0001, prometheus-0001, otel-collector-0001, cockroachdb-0001..0004,
tidb-0001..0008, kubernetes-0001/0002, go-0001, kotlin-0002, scala-0001,
allegro5-0001, sdl2-0001, grafana-0001, clickhouse-0001, duckdb-0001,
mongodb-0001, envoy-0001, istio-0001, cilium-0001, linkerd2-0001,
linux-0001/0002/0003, tor-0002/0003, curl-0001, julia-0001, lua-0001,
perl5-0001, nats-0001, spring-0003/0004, tomcat-0001, onos-0002, odl-0002
MEDIUM: helm-0001, mariadb-0002, openssl-0001/0002, memcached-0001,
cassandra-0001..0004, flink-0001, storm-0001/0002, zookeeper-0001..0003,
pip-0001, gradle-0001, nginx-0001, haproxy-0001, caddy-0001, varnish-0001,
ffmpeg-0001, gstreamer-0001, raylib-0001, love2d-0001, php-0001/0002,
r-source-0001, cpython-0002, ruby-0001, rabbitmq-0003/0004, activemq-0001,
ovs-0001, onos-0003, odl-0002, jetty-0001
PDF: 976K
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260 changed files with 18278 additions and 15 deletions
89
defects/storm/unit/StormFieldsDedupTest.java
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89
defects/storm/unit/StormFieldsDedupTest.java
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package unit;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* storm-0001: Fields constructor — ArrayList.contains() O(n²) vs HashMap.containsKey() O(n).
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*
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* Standalone unit test — no JUnit required.
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* Compile: javac -d . StormFieldsDedupTest.java
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* Run: java unit.StormFieldsDedupTest
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*/
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public class StormFieldsDedupTest {
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static long slowOps;
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static long fastOps;
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/**
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* Slow: mirrors original Fields(List<String>) — uses ArrayList.contains() for dup check.
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* O(n²) because contains() scans the growing list for each of n fields.
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*/
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static List<String> slowFields(List<String> input) {
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slowOps = 0;
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List<String> fields = new ArrayList<>(input.size());
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for (String field : input) {
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slowOps++; // outer iteration
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for (String existing : fields) { // ArrayList.contains() scan
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slowOps++;
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if (existing.equals(field)) {
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throw new IllegalArgumentException("duplicate field '" + field + "'");
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}
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}
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fields.add(field);
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}
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return fields;
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}
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/**
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* Fast: patched version — checks index HashMap (O(1)) and populates it inline.
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* O(n) total.
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*/
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static List<String> fastFields(List<String> input) {
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fastOps = 0;
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List<String> fields = new ArrayList<>(input.size());
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Map<String, Integer> index = new HashMap<>();
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for (String field : input) {
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fastOps++; // outer iteration
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fastOps++; // HashMap.containsKey() — O(1)
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if (index.containsKey(field)) {
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throw new IllegalArgumentException("duplicate field '" + field + "'");
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}
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fields.add(field);
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index.put(field, fields.size() - 1);
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}
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return fields;
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}
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static void run(int n, int expectedNx) {
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List<String> input = new ArrayList<>();
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for (int i = 0; i < n; i++) input.add("field_" + i);
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List<String> slowResult = slowFields(input);
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List<String> fastResult = fastFields(input);
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boolean resultsMatch = slowResult.equals(fastResult);
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boolean quadraticWorse = slowOps > fastOps * expectedNx;
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System.out.printf("n=%-4d slow=%6d fast=%4d ratio=%5.1fx match=%b PASS=%b%n",
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n, slowOps, fastOps, (double) slowOps / fastOps, resultsMatch,
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resultsMatch && quadraticWorse);
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if (!resultsMatch || !quadraticWorse) {
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throw new AssertionError(
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"FAIL n=" + n + " resultsMatch=" + resultsMatch +
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" slowOps=" + slowOps + " fastOps=" + fastOps +
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" needed ratio>" + expectedNx);
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}
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}
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public static void main(String[] args) {
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System.out.println("=== storm-0001: Fields constructor O(n^2) vs O(n) ===");
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run(100, 10);
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run(500, 30);
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run(1000, 60);
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System.out.println("3/3 PASS");
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}
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}
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