FULL PRODUCT VERSION :
java version "1.8.0_20-ea"
Java(TM) SE Runtime Environment (build 1.8.0_20-ea-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.20-b14, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux HOST 3.11.0-18-generic #32-Ubuntu SMP Tue Feb 18 21:11:14 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

A DESCRIPTION OF THE PROBLEM :
The class provided below compiles using javac 1.8.0_05-b13, but causes a stack overflow exception with javac 1.8.0_20-ea-b14.

REGRESSION. Last worked in version 8

ADDITIONAL REGRESSION INFORMATION:
java version "1.8.0_05"
Java(TM) SE Runtime Environment (build 1.8.0_05-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile the source code given below.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
It should compile without problem.
ACTUAL -
It produces a stack overflow exception shown below.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
The system is out of resources.
Consult the following stack trace for details.
java.lang.StackOverflowError
at com.sun.tools.javac.code.Type.hasTag(Type.java:97)
at com.sun.tools.javac.code.Types$SameTypeVisitor.visitType(Types.java:1102)
at com.sun.tools.javac.code.Types$SameTypeVisitor.visitType(Types.java:1088)
at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visitTypeVar(Types.java:4404)
at com.sun.tools.javac.code.Type$TypeVar.accept(Type.java:1266)
at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4398)
at com.sun.tools.javac.code.Types.isSameType(Types.java:1082)
at com.sun.tools.javac.code.Types.isSameType(Types.java:1077)
at com.sun.tools.javac.code.Types.containsTypeEquivalent(Types.java:4061)
at com.sun.tools.javac.code.Types.containsTypeEquivalent(Types.java:1436)
at com.sun.tools.javac.code.Types$LooseSameTypeVisitor.containsTypes(Types.java:1231)
at com.sun.tools.javac.code.Types$SameTypeVisitor.visitClassType(Types.java:1156)
at com.sun.tools.javac.code.Types$SameTypeVisitor.visitClassType(Types.java:1088)
at com.sun.tools.javac.code.Type$ClassType.accept(Type.java:763)
at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4398)
...


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class StackOverflowBug {

  interface A<T> {
  }

  <T extends A<T>> T m(T v) {
    return m(v);
  }
}
---------- END SOURCE ----------