FULL PRODUCT VERSION :
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Linux 4.10.16-1-ck-sandybridge #1 SMP PREEMPT Sun May 14 10:01:03 EDT 2017 x86_64 GNU/Linux

A DESCRIPTION OF THE PROBLEM :
In an annotation processor, I am getting parameter names from a constructor. They were incorrect, but I noticed they worked with javac 1.6, and when I removed the -parameters argument for javac 1.8 they were correct too, so the -parameters compiler flag causes the issue.

The constructor in question is:

FieldPerson(long personNo, Date birthDate, String firstName, String lastName)

javac 1.6, and 1.8 without -parameters sees:

FieldPerson(long personNo, java.util.Date birthDate, java.lang.String firstName, java.lang.String lastName)

javac 1.8 with -parameters sees:

FieldPerson(long personNo, java.util.Date firstName, java.lang.String lastName, java.lang.String arg3)

So somehow, parameter names are shifted to the left one starting at index 1 not 0.

This bug effectively lets you choose to have parameter names available at compile time or runtime but not both.

REGRESSION. Last worked in version 6u45

ADDITIONAL REGRESSION INFORMATION:
I think this is only because -parameters was introduced with 1.8

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Correct parameter names
ACTUAL -
Incorrect/shifted parameter names

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
/* complete example code is here:
https://code.moparisthebest.com/moparisthebest/JdbcMapper/src/68c1c0482e56c1a2a3ea842a6a71fea3e4444738/jdbcmapper/src/main/java/com/moparisthebest/jdbc/codegen/CompileTimeRowToObjectMapper.java#L88
just uncomment that and compile with maven and an exception will be shown with the problem

here is code that could run on any TypeMirror someTypeMirror from a AbstractProcessor
*/

if(someTypeMirror.getKind() == TypeKind.DECLARED) {
final List<? extends Element> methodsAndConstructors = ((TypeElement) ((DeclaredType) someTypeMirror).asElement()).getEnclosedElements();
processingEnv.getMessager().printMessage(Diagnostic.Kind.MANDATORY_WARNING, methodsAndConstructors.stream().filter(e -> e.getKind() == ElementKind.CONSTRUCTOR && e.getModifiers().contains(Modifier.PUBLIC)).map(e -> e.toString() +
": '" + ((ExecutableElement) e).getParameters().stream().map(param -> param.asType() + " " + param.getSimpleName().toString()).collect(java.util.stream.Collectors.joining(", ")) + "'"
).collect(java.util.stream.Collectors.joining(", ")));
}
---------- END SOURCE ----------