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Pass the cause when a UserError reports an I/O failure - #8130
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`ASceneWrapper.writeToFile` and `WholeProgramInferenceScenesStorage.getScene` built a `UserError` from `e.getMessage()`, which for many `IOException`s is just a file name, and discarded the cause chain. Pass the exception instead. Add constructors `UserError(String, Throwable)` and `UserError(Throwable, String, Object...)`. Without them, `new UserError(message, throwable)` resolved to the varargs constructor `UserError(String, Object...)`, which discarded the throwable and treated the message as a format string; a message containing a percent sign therefore threw an exception from `String.format` rather than reporting the user error. Several existing call sites, such as `WholeProgramInferenceScenesStorage.writeScenes` and `DOTCFGVisualizer.visualize`, now record their cause. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
…o wpi-review-fix-47
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📝 WalkthroughWalkthroughThe change adds cause-aware Priority: ⬇️ Low Merge Risk: 🔵 Low · up to Cause-chain logging improves I/O error diagnostics, but a valueless exceptionLineSeparator option can make error reporting fail and hide the original user error. Add a null fallback before merging. 🚥 Pre-merge checks | ✅ 3✅ Passed checks (3 passed)
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* SourceChecker.logUserError now prints the cause chain, so a cause attached to a UserError is no longer discarded on paths that catch UserError (such as typeProcess). * Document that a lone Throwable vararg selects UserError(String, Throwable), so the format string is used literally. * Do not put the exception's toString() in the WPI read/write messages; it duplicated the file name and leaked a JVM class name. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Inline comments:
In
`@framework/src/main/java/org/checkerframework/framework/source/SourceChecker.java`:
- Line 3265: Update the exceptionLineSeparator option handling in SourceChecker
to explicitly fall back to System.lineSeparator() when getOptions() returns a
null value, rather than relying on Map.getOrDefault. Preserve configured
non-null separators and ensure StringJoiner cannot receive null.
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framework/src/main/java/org/checkerframework/common/wholeprograminference/WholeProgramInferenceScenesStorage.javaframework/src/main/java/org/checkerframework/common/wholeprograminference/scenelib/ASceneWrapper.javaframework/src/main/java/org/checkerframework/framework/source/SourceChecker.javajavacutil/build.gradlejavacutil/src/main/java/org/checkerframework/javacutil/UserError.javajavacutil/src/test/java/org/checkerframework/javacutil/UserErrorTest.java
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javac maps an option supplied without a value to null, so Map.getOrDefault returned null and StringJoiner threw a NullPointerException while logging an error. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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ASceneWrapper.writeToFileandWholeProgramInferenceScenesStorage.getScenebuilt a
UserErrorfrome.getMessage(), which for manyIOExceptions is justa file name, and discarded the cause chain. Pass the exception instead.
Add constructors
UserError(String, Throwable)andUserError(Throwable, String, Object...). Without them,new UserError(message, throwable)resolved to the varargs constructor
UserError(String, Object...), whichdiscarded the throwable and treated the message as a format string; a message
containing a percent sign therefore threw an exception from
String.formatrather than reporting the user error. Several existing call sites, such as
WholeProgramInferenceScenesStorage.writeScenesandDOTCFGVisualizer.visualize, now record their cause.