charIndex out of range when parsing an incomplete source

[numberpi]

Parsing a$ causes the following exception:

Caused by: java.lang.IllegalArgumentException: charIndex out of range
	at com.oracle.truffle.api.source.Source.createSection(Source.java:606)
	at com.oracle.truffle.r.engine.REngine.createRScriptRoot(REngine.java:385)
	at com.oracle.truffle.r.engine.REngine.parseToCallTarget(REngine.java:303)
	at com.oracle.truffle.r.engine.TruffleRLanguageImpl.parse(TruffleRLanguageImpl.java:195)
	at com.oracle.truffle.api.TruffleLanguage$ParsingRequest.parse(TruffleLanguage.java:799)
	at com.oracle.truffle.api.TruffleLanguage.parse(TruffleLanguage.java:1246)
	at com.oracle.truffle.api.TruffleLanguage$LanguageImpl.parse(TruffleLanguage.java:2449)
	at com.oracle.truffle.api.instrumentation.TruffleInstrument$Env.parse(TruffleInstrument.java:409)

This is because a new-line character is appended in REngine.createRScriptRoot if a IncompleteSourceException occurs so that the StringBuilder contains more characters than the source.

[steve-s]

Hi Daniel,

thanks for the report. We're looking into this.

[steve-s]

Should be fixed in d172bee