diff options
| author | Pekka Enberg <penberg@kernel.org> | 2011-10-30 07:36:38 +0000 |
|---|---|---|
| committer | Pekka Enberg <penberg@kernel.org> | 2011-10-30 07:36:38 +0000 |
| commit | 5b6355cb81d5404d359b14b6d8cb49a359831094 (patch) | |
| tree | cc0899bf0c943146f7674de8b2740ffcc3fbe78c /java/util/HashMap.java | |
| parent | f3961f046edcdf6fca9897c2a3c0bb406d693ec3 (diff) | |
| download | classpath-5b6355cb81d5404d359b14b6d8cb49a359831094.tar.gz | |
Stefan Ring reports that commit f154af6 ("Fix HashMap.put() to check for
hashCode equality before equals()") breaks running the CACAO test suite. The
breakage looks like this:
LD_LIBRARY_PATH=../../../src/cacao/.libs ../../../src/cacao/cacao -Xbootclasspath:../../../src/classes/classes:/home/sr/classpathcvs/share/classpath/glibj.zip -classpath /usr/share/java/junit4.jar:. org.junit.runner.JUnitCore All
JUnit version 4.5
.E
Time: 0.003
There was 1 failure:
1) initializationError(All)
java.lang.NullPointerException
at java.util.HashMap.put(HashMap.java:348)
at java.util.HashSet.add(HashSet.java:151)
at org.junit.runners.model.RunnerBuilder.addParent(RunnerBuilder.java:64)
at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:81)
at org.junit.runners.Suite.<init>(Suite.java:88)
at org.junit.runners.Suite.<init>(Suite.java:54)
at java.lang.reflect.VMConstructor.construct(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:318)
at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:35)
at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:24)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:93)
at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:84)
at org.junit.runners.Suite.<init>(Suite.java:66)
at org.junit.runner.Request.classes(Request.java:68)
at org.junit.runner.JUnitCore.run(JUnitCore.java:107)
at org.junit.runner.JUnitCore.runMain(JUnitCore.java:88)
at org.junit.runner.JUnitCore.runMainAndExit(JUnitCore.java:54)
at org.junit.runner.JUnitCore.main(JUnitCore.java:46)
FAILURES!!!
Tests run: 1, Failures: 1
Looking at the code, it's obviously broken for HashMap.put() with a null key.
2011-10-24 Pekka Enberg <penberg@kernel.org>
* java/util/HashMap.java:
(put): Fix NullPointerException for null keys.
Diffstat (limited to 'java/util/HashMap.java')
| -rw-r--r-- | java/util/HashMap.java | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/java/util/HashMap.java b/java/util/HashMap.java index 9d64fecb4..f5194a240 100644 --- a/java/util/HashMap.java +++ b/java/util/HashMap.java @@ -343,9 +343,12 @@ public class HashMap<K, V> extends AbstractMap<K, V> int idx = hash(key); HashEntry<K, V> e = buckets[idx]; + int hash1 = key == null ? 0 : key.hashCode(); while (e != null) { - if ((key.hashCode() == e.key.hashCode()) && equals(key, e.key)) + int hash2 = e.key == null ? 0 : e.key.hashCode(); + + if ((hash1 == hash2) && equals(key, e.key)) { e.access(); // Must call this for bookkeeping in LinkedHashMap. V r = e.value; |