ADDITIONAL SYSTEM INFORMATION :
openjdk version "13" 2019-09-17
OpenJDK Runtime Environment (build 13+33)
OpenJDK 64-Bit Server VM (build 13+33, mixed mode, sharing)


A DESCRIPTION OF THE PROBLEM :
When I compile the following java program
```
class C {

    void x() {
        String s = """

""";
    }
}
```
with the following command:
```
javac --release 13 --enable-preview -Xlint X.java
```

then this exception is thrown by javac:
java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 0
        at jdk.compiler/com.sun.tools.javac.parser.JavaTokenizer$TextBlockSupport.checkWhitespace(JavaTokenizer.java:348)
        at jdk.compiler/com.sun.tools.javac.parser.JavaTokenizer.readToken(JavaTokenizer.java:1033)
        at jdk.compiler/com.sun.tools.javac.parser.Scanner.nextToken(Scanner.java:115)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.nextToken(JavacParser.java:263)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.variableDeclaratorRest(JavacParser.java:3249)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.variableDeclaratorsRest(JavacParser.java:3220)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.variableDeclarators(JavacParser.java:3202)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.localVariableDeclarations(JavacParser.java:2643)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.blockStatement(JavacParser.java:2630)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.blockStatements(JavacParser.java:2484)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.block(JavacParser.java:2454)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.block(JavacParser.java:2468)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.methodDeclaratorRest(JavacParser.java:4012)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.classOrInterfaceBodyDeclaration(JavacParser.java:3947)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.classOrInterfaceBody(JavacParser.java:3848)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.classDeclaration(JavacParser.java:3687)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.classOrInterfaceOrEnumDeclaration(JavacParser.java:3641)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.typeDeclaration(JavacParser.java:3630)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.parseCompilationUnit(JavacParser.java:3474)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:639)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:676)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.java:1031)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.java:1018)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:938)
        at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:318)
        at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:176)
        at jdk.compiler/com.sun.tools.javac.Main.compile(Main.java:57)
        at jdk.compiler/com.sun.tools.javac.Main.main(Main.java:43)


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile the following java program
```
class C {

    void x() {
        String s = """

""";
    }
}
```
with the following command:
```
javac --release 13 --enable-preview -Xlint X.java

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Succesful compilation.
ACTUAL -
An exception is thrown by javac:

java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 0
        at jdk.compiler/com.sun.tools.javac.parser.JavaTokenizer$TextBlockSupport.checkWhitespace(JavaTokenizer.java:348)
        at jdk.compiler/com.sun.tools.javac.parser.JavaTokenizer.readToken(JavaTokenizer.java:1033)
        at jdk.compiler/com.sun.tools.javac.parser.Scanner.nextToken(Scanner.java:115)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.nextToken(JavacParser.java:263)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.variableDeclaratorRest(JavacParser.java:3249)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.variableDeclaratorsRest(JavacParser.java:3220)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.variableDeclarators(JavacParser.java:3202)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.localVariableDeclarations(JavacParser.java:2643)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.blockStatement(JavacParser.java:2630)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.blockStatements(JavacParser.java:2484)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.block(JavacParser.java:2454)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.block(JavacParser.java:2468)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.methodDeclaratorRest(JavacParser.java:4012)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.classOrInterfaceBodyDeclaration(JavacParser.java:3947)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.classOrInterfaceBody(JavacParser.java:3848)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.classDeclaration(JavacParser.java:3687)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.classOrInterfaceOrEnumDeclaration(JavacParser.java:3641)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.typeDeclaration(JavacParser.java:3630)
        at jdk.compiler/com.sun.tools.javac.parser.JavacParser.parseCompilationUnit(JavacParser.java:3474)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:639)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:676)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.java:1031)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.java:1018)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:938)
        at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:318)
        at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:176)
        at jdk.compiler/com.sun.tools.javac.Main.compile(Main.java:57)
        at jdk.compiler/com.sun.tools.javac.Main.main(Main.java:43)


---------- BEGIN SOURCE ----------

class C {

    void x() {
        String s = """

""";
    }
}


---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
remove the -Xlint option from the command

FREQUENCY : always