FULL PRODUCT VERSION :
java version "1.9.0-ea"
Java(TM) SE Runtime Environment (build 1.9.0-ea-b76)
Java HotSpot(TM) 64-Bit Server VM (build 1.9.0-ea-b76, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux x86_64

A DESCRIPTION OF THE PROBLEM :
The fix for JDK-7101822 (Compiling depends on order of imports) [1][2] introduced a bug that makes compilation depend on the order of source files passed to javac.

I already reported a similar issue as JI-9023253. I discovered another instance with a different repro, so I'm including the second test case here.

[1] http://hg.openjdk.java.net/jdk9/dev/langtools/rev/9d2192f36e53
[2] https://bugs.openjdk.java.net/browse/JDK-7101822

REGRESSION. Last worked in version 8u51

ADDITIONAL REGRESSION INFORMATION:
java version "1.8.0_51"
Java(TM) SE Runtime Environment (build 1.8.0_51-b16)
Java HotSpot(TM) 64-Bit Server VM (build 25.51-b03, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compiling the included test program succeeds or fails depending on the order of sources passed to javac.

$ javac pkg/A.java pkg/B.java pkg/C.java
# compiles successfully

$ javac pkg/C.java pkg/B.java pkg/A.java
# fails to compile


pkg/B.java:4: error: cannot find symbol
  public interface BHandler extends Handler {}
                                    ^
  symbol: class Handler
  location: class B
1 error


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I expected compilation to not depend on the order of sources.
ACTUAL -
Compilation depended on the order of sources.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
pkg/B.java:4: error: cannot find symbol
  public interface BHandler extends Handler {}
                                    ^
  symbol: class Handler
  location: class B
1 error


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
=== pkg/A.java ===
package pkg;

public class A {
  public interface Handler {}
}
=== pkg/B.java ===
package pkg;

public class B extends A {
  public interface BHandler extends Handler {}
}
=== pkg/C.java ===
package pkg;

import pkg.B.BHandler;

public class C implements BHandler {}
===
---------- END SOURCE ----------