hg: jdk/sandbox: 8218228: The constructor StringBuffer(CharSequence) violates spec for negatively sized argument

[chris.hegarty at oracle.com]

Changeset: 723f665d0596
Author:    igerasim
Date:      2019-03-01 12:47 -0800
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/723f665d0596

8218228: The constructor StringBuffer(CharSequence) violates spec for negatively sized argument
Reviewed-by: rriggs, darcy

! src/java.base/share/classes/java/lang/AbstractStringBuilder.java
! src/java.base/share/classes/java/lang/StringBuffer.java
! test/jdk/java/lang/StringBuffer/AppendCharSequence.java