ADDITIONAL SYSTEM INFORMATION :
Windows 2019 Standard 64Bit

A DESCRIPTION OF THE PROBLEM :
alter JAVA SOURCE longSubstr compile
An exception has occurred in the compiler (1.8.0_121-ea). Please
file a bug against the Java compiler via the Java bug reporting
page (http://bugreport.java.com) after checking the Bug Database
(http://bugs.java.com) for duplicates. Include your program and
the following diagnostic in your report. Thank you.

at oracle.aurora.rdbms.Compiler.compile(Compiler.java)
at
com.sun.tools.javac.util.JCDiagnostic.<init>(JCDiagnostic.java)

at
com.sun.tools.javac.util.JCDiagnostic$Factory.create(JCDiagnostic
.java)

at
com.sun.tools.javac.util.JCDiagnostic$Factory.error(JCDiagnostic.
java)

at com.sun.tools.javac.util.AbstractLog.error(AbstractLog.java)
at
com.sun.tools.javac.parser.JavaTokenizer.lexError(JavaTokenizer.j
ava)

at
com.sun.tools.javac.parser.JavaTokenizer.readToken(JavaTokenizer.
java)

at com.sun.tools.javac.parser.Scanner.nextToken(Scanner.java)
at
com.sun.tools.javac.parser.JavacParser.nextToken(JavacParser.java
)

at
com.sun.tools.javac.parser.JavacParser.accept(JavacParser.java)

at com.sun.tools.javac.parser.JavacParser.block(JavacParser.java)
at com.sun.tools.javac.parser.JavacParser.block(JavacParser.java)
at
com.sun.tools.javac.parser.JavacParser.parseStatement(JavacParser
.java)

at
com.sun.tools.javac.parser.JavacParser.blockStatement(JavacParser
.java)

at
com.sun.tools.javac.parser.JavacParser.blockStatements(JavacParse
r.java)

at com.sun.tools.javac.parser.JavacParser.block(JavacParser.java)
at com.sun.tools.javac.parser.JavacParser.block(JavacParser.java)
at
com.sun.tools.javac.parser.JavacParser.methodDeclaratorRest(Javac
Parser.java)

at
com.sun.tools.javac.parser.JavacParser.classOrInterfaceBodyDeclar
ation(JavacParser.java)

at
com.sun.tools.javac.parser.JavacParser.classOrInterfaceBody(Javac
Parser.java)

at
com.sun.tools.javac.parser.JavacParser.classDeclaration(JavacPars
er.java)

at
com.sun.tools.javac.parser.JavacParser.classOrInterfaceOrEnumDecl
aration(JavacParser.java)

at
com.sun.tools.javac.parser.JavacParser.typeDeclaration(JavacParse
r.java)

at
com.sun.tools.javac.parser.JavacParser.parseCompilationUnit(Javac
Parser.java)

at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java)
at
com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.jav
a)

at
com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java)

at
com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java)

at oracle.aurora.jdkcompiler.JdkDriver.compile(JdkDriver.java)
at oracle.aurora.rdbms.Compiler.doCompile(Compiler.java)
at oracle.aurora.rdbms.Compiler.access$000(Compiler.java)
at oracle.aurora.rdbms.Compiler$1.run(Compiler.java)
at java.security.AccessController.doPrivileged(Native Method)
java.lang.IllegalArgumentException