[Checkers] bug in Log when outputing tabs

[Jonathan Gibbons]

Mahmood,

Thank you for your report; we know of the bug; a fix is underway.

-- Jon

On Aug 14, 2008, at 10:40 PM, Mahmood Ali wrote:

> Greetings,
>
> The changeset 72:1cf29847eb6e (whose parent is 70:41fb91c70d47),  
> dated July 15th, 2008 and described as '6724071: refactor Log into a  
> front end and back end', makes the compiler unstable when compiling  
> a file containing tabs.
>
> Consider the file TestTabs.java containing:
> 	t
> (note beginning white space is a tab)
>
> When compiling with any successor changeset that is a child of the  
> given one, the compiling outputs an Exception stack trace (while  
> outputing ^).  The expected result is the compiler would output '^'  
> in the proper location and continue to parse the rest of the file  
> (or stop) without an exception!
>
> Sorry for sending this to the mailing list instead of open a bug  
> report.  I decided to email, since I didn't know if the Sun database  
> accepts bugs associated with OpenJDK javac 7.
>
> Attached below is my transcript of my compilation and determining  
> the revision causing the error:
>
> Thanks,
> Mahmood
>
> mahmood-mac:langtools mahmood$ hg up
> 0 files updated, 0 files merged, 0 files removed, 0 files unresolved
> mahmood-mac:langtools mahmood$ hg tip
> changeset:   84:1c4a97a661b9
> tag:         tip
> user:        xdono
> date:        Thu Aug 14 09:26:42 2008 -0700
> summary:     Added tag jdk7-b33 for changeset 0a5f04fb7282
>
> mahmood-mac:langtools mahmood$ ./dist/bin/javac ~/TestTabs.java
> mahmood-mac:langtools mahmood$ ant -f make/build.xml clean build- 
> javac > /dev/null
> mahmood-mac:langtools mahmood$ ./dist/bin/javac ~/ 
> TestTabs.javaTestTabs.java:1: reached end of file while parsing
> 	t
> 	 An exception has occurred in the compiler (1.7.0-internal). Please  
> file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport 
> )  after checking the Bug Parade for duplicates. Include your  
> program and the following diagnostic in your report.  Thank you.
> java.lang.StringIndexOutOfBoundsException: String index out of  
> range: 2
> 	at java.lang.String.charAt(String.java:687)
> 	at com.sun.tools.javac.util.Log.printErrLine(Log.java:251)
> 	at com.sun.tools.javac.util.Log.writeDiagnostic(Log.java:343)
> 	at com.sun.tools.javac.util.Log.report(Log.java:315)
> 	at com.sun.tools.javac.util.AbstractLog.error(AbstractLog.java:96)
> 	at com.sun.tools.javac.parser.Parser.reportSyntaxError(Parser.java: 
> 293)
> 	at com.sun.tools.javac.parser.Parser.syntaxError(Parser.java:281)
> 	at  
> com 
> .sun 
> .tools 
> .javac.parser.Parser.classOrInterfaceOrEnumDeclaration(Parser.java: 
> 2238)
> 	at com.sun.tools.javac.parser.Parser.typeDeclaration(Parser.java: 
> 2212)
> 	at com.sun.tools.javac.parser.Parser.compilationUnit(Parser.java: 
> 2158)
> 	at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:549)
> 	at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:590)
> 	at  
> com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.java: 
> 841)
> 	at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java: 
> 767)
> 	at com.sun.tools.javac.main.Main.compile(Main.java:386)
> 	at com.sun.tools.javac.main.Main.compile(Main.java:312)
> 	at com.sun.tools.javac.main.Main.compile(Main.java:303)
> 	at com.sun.tools.javac.Main.compile(Main.java:82)
> 	at com.sun.tools.javac.Main.main(Main.java:67)
> mahmood-mac:langtools mahmood$ hg up
> 7284 files updated, 0 files merged, 14 files removed, 0 files  
> unresolved
> mahmood-mac:langtools mahmood$ ant -f make/build.xml clean build- 
> javac > /dev/null
> mahmood-mac:langtools mahmood$ ./dist/bin/javac ~/TestTabs.java/ 
> Users/mahmood/TestTabs.java:1: reached end of file while parsing
> 	t
> 	 An exception has occurred in the compiler (1.7.0-internal). Please  
> file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport 
> )  after checking the Bug Parade for duplicates. Include your  
> program and the following diagnostic in your report.  Thank you.
> java.lang.StringIndexOutOfBoundsException: String index out of  
> range: 2
> 	at java.lang.String.charAt(String.java:687)
> 	at com.sun.tools.javac.util.Log.printErrLine(Log.java:251)
> 	at com.sun.tools.javac.util.Log.writeDiagnostic(Log.java:343)
> 	at com.sun.tools.javac.util.Log.report(Log.java:315)
> 	at com.sun.tools.javac.util.AbstractLog.error(AbstractLog.java:96)
> 	at com.sun.tools.javac.parser.Parser.reportSyntaxError(Parser.java: 
> 293)
> 	at com.sun.tools.javac.parser.Parser.syntaxError(Parser.java:281)
> 	at  
> com 
> .sun 
> .tools 
> .javac.parser.Parser.classOrInterfaceOrEnumDeclaration(Parser.java: 
> 2243)
> 	at com.sun.tools.javac.parser.Parser.typeDeclaration(Parser.java: 
> 2217)
> 	at com.sun.tools.javac.parser.Parser.compilationUnit(Parser.java: 
> 2163)
> 	at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:530)
> 	at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:571)
> 	at  
> com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.java: 
> 822)
> 	at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java: 
> 748)
> 	at com.sun.tools.javac.main.Main.compile(Main.java:386)
> 	at com.sun.tools.javac.main.Main.compile(Main.java:312)
> 	at com.sun.tools.javac.main.Main.compile(Main.java:303)
> 	at com.sun.tools.javac.Main.compile(Main.java:82)
> 	at com.sun.tools.javac.Main.main(Main.java:67)
> mahmood-mac:langtools mahmood$ hg up
> 703 files updated, 0 files merged, 2 files removed, 0 files unresolved
> mahmood-mac:langtools mahmood$ ant -f make/build.xml clean build- 
> javac > /dev/null
> mahmood-mac:langtools mahmood$ ./dist/bin/javac ~/TestTabs.java/ 
> Users/mahmood/TestTabs.java:1: reached end of file while parsing
> 	t
> 	^
> 1 error
> mahmood-mac:langtools mahmood$
>