google/error-prone

View on GitHub

Catch common Java mistakes as compile-time errors

Stars: 7.2k
Forks: 820
Open beginner issues: 2
Indexed issues: 433
Avg merge: 5h 9m
Merged PRs (30d): 50

Dominant language: Java
License: Apache-2.0
Last GitHub push: Sep 15, 2026
Latest indexed: Sep 16, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

Open All

433 open issues indexed

GurardedBy bug pattern doesn't consider lock held if it is acquired via the Lock#tryLock methods Open

google/error-prone#943 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add positive exception to SelfComparison, when it's part of assertEquals(0, x.compareTo(x)) Open

google/error-prone#967 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
Bug Patterns page does not make clear first version on which each check is present Open

google/error-prone#976 · 2 comments · 3 reactions · 0 assignees · Indexed Sep 16, 2026
Consider splitting HidingField into two bugpatterns Open

google/error-prone#979 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
MutableMethodReturnType documentation should mention that the warning may not apply to APIs. Open

google/error-prone#982 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
FutureReturnValueIgnored analogue for CompletionStages Open

google/error-prone#983 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
StreamToString fails if supertype of used type is not visible Open

google/error-prone#987 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
False positive for FutureReturnValueIgnored on CompletableFuture.runAsync(...).exceptionally(...) Open

google/error-prone#988 · 2 comments · 4 reactions · 0 assignees · Indexed Sep 16, 2026
Error Prone Performance Problems. Open

google/error-prone#994 · 12 comments · 10 reactions · 0 assignees · Indexed Sep 16, 2026
Check for primitive Objects.hashCode() arguments Open

google/error-prone#1017 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
False positive of MustBeClosedChecker - super() call Open

google/error-prone#1029 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
InconsistentCapitalization warning for names in different scopes Open

google/error-prone#1033 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 16, 2026
feature request: Check errorprone annotations by class name to avoid dependency on errorprone Open

google/error-prone#1037 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
RefasterRuleCompiler silently ignores compilation errors in refaster templates Open

google/error-prone#1053 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
Feature: Tainting Open

google/error-prone#1056 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
Compiler generates invalid patch files when the patch location is in a subdirectory Open

google/error-prone#1065 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Suggested pattern: System.arraycopy() with non-array arguments Open

Type-NewCheck

google/error-prone#1069 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
Suggested bug pattern: string.startsWith("") Open

Type-NewCheck

google/error-prone#1075 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Compiler does not warn about invalid check names when using -XepPatchChecks Open

google/error-prone#1092 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 16, 2026
Error when multiple qualifier annotations include a qualifier with an array of annotations Open

google/error-prone#1105 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Suggested bug pattern: using "nested" method references Open

Type-NewCheck

google/error-prone#1118 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
"Did you mean to..." hint messages contain repeated text Open

google/error-prone#1126 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
ImmutableEnumChecker should respect Design Pattern (Singleton using Enum) Open

google/error-prone#1137 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
2.3.2 NPE EqualsGetClass$EqualsFixer.matchesThis(EqualsGetClass.java:129) Open

not-reproducible

google/error-prone#1155 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
False positive with `Var` Open

google/error-prone#1183 · 6 comments · 2 reactions · 0 assignees · Indexed Sep 16, 2026
Split VarChecker into a VarChecker and a Final Checker Open

google/error-prone#1189 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
MethodSymbol annotations are not available when retrieving from findEnclosing() Open

google/error-prone#1203 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
JavaLangClash for for other frameworks' APIs Open

Type-NewCheck

google/error-prone#1204 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 16, 2026
RFE: configurable DoNotCall/RestrictedApi/JdkObsolete/DefaultCharset/JavaTimeDefaultTimeZone check Open

google/error-prone#1211 · 2 comments · 4 reactions · 0 assignees · Indexed Sep 16, 2026
Check for AutoOneOf usage Open

google/error-prone#1217 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
[2.3.3] RxReturnValueIgnored false-positive Open

google/error-prone#1230 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Document -XepIgnoreSuppressionAnnotations Open

google/error-prone#1232 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
lombok causes an IndexOutOfBoundsException in UnusedVariable Open

lombok

google/error-prone#1250 · 19 comments · 10 reactions · 0 assignees · Indexed Sep 16, 2026
Syntactically invalid `@Var` patch suggestion Open

google/error-prone#1272 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Annotation idea: WritesGuardedBy Open

google/error-prone#1280 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Use 'ThreadLocalRandom' instead of 'java.util.Random' Open

Type-NewCheck

google/error-prone#1304 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Usage of Clock.systemDefaultZone() should not trigger [JavaTimeDefaultTimeZone] Open

google/error-prone#1312 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Compatibility of refaster rules file not documented Open

google/error-prone#1318 · 1 comment · 3 reactions · 0 assignees · Indexed Sep 16, 2026
GuardedBy check doesn't like incorrect class names Open

google/error-prone#1351 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
GuardedBy properly supporting ReadWriteLock's exclusive/shared levels Open

google/error-prone#1370 · 0 comments · 7 reactions · 0 assignees · Indexed Sep 16, 2026
Validate when InputStream.read return value is ignored Open

Type-NewCheck

google/error-prone#1383 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 16, 2026
Detect a deadlock from a ConcurrentHashMap use Open

Type-NewCheck

google/error-prone#1384 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Files.isDirectory and friends are unsafe Open

Type-NewCheck

google/error-prone#1388 · 0 comments · 3 reactions · 0 assignees · Indexed Sep 16, 2026
Matchers.isSubtypeOf always matches literal null Open

google/error-prone#1397 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
False positive FunctionalInterfaceMethodChanged when signature changes Open

google/error-prone#1410 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Flag Path.toFile() calls as WARNING Open

google/error-prone#1411 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
use javadoc.io for javadoc hosting? Open

google/error-prone#1422 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add alias for @FormatMethod Open

google/error-prone#1440 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Prevent more common DateTimeFormatter issues Open

google/error-prone#1462 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
New check: result of CountDownLatch.await(timeout, TimeUnit) is not checked Open

Type-NewCheck

google/error-prone#1490 · 5 comments · 4 reactions · 0 assignees · Indexed Sep 16, 2026

google/error-prone

Get new issues in your inbox