Build failure with --enable-debug

The latest jdk8/tl forest fails to build with --enable-debug.

This failure seems to be as a result of the changes for 8025998. I have not looked into the specifics of 8025998, but I have verified that winding back the four affected files (see below) to versions pre 8025998 resolves the issue.


    langtools/src/share/classes/com/sun/tools/javac/jvm/Gen.java
    langtools/src/share/classes/com/sun/tools/javac/code/Flags.java
    langtools/src/share/classes/com/sun/tools/javac/comp/Flow.java
    langtools/src/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java
---
....
Compiling 4 files for BUILD_BREAKITERATOR
[Parsed DTD html32 in 155ms]
Compiling 10107 files for BUILD_JDK
An exception has occurred in the compiler (1.8.0-internal-fastdebug). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport) after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report. Thank you.
java.lang.AssertionError: Value of x -1
        at com.sun.tools.javac.util.Assert.error(Assert.java:133)
        at com.sun.tools.javac.util.Assert.check(Assert.java:94)
        at com.sun.tools.javac.util.Bits.incl(Bits.java:186)
        at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.initParam(Flow.java:1796)
        at com.sun.tools.javac.jvm.Gen$LVTAssignAnalyzer.initParam(Gen.java:2858)
        at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.visitTry(Flow.java:2083)
        at com.sun.tools.javac.tree.JCTree$JCTry.accept(JCTree.java:1167)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:389)
        at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.scan(Flow.java:1367)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:57)
        at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.visitBlock(Flow.java:1815)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:903)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:389)
        at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.scan(Flow.java:1367)
        at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.visitMethodDef(Flow.java:1753)
        at com.sun.tools.javac.jvm.Gen$LVTAssignAnalyzer.visitMethodDef(Gen.java:2911)
        at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:772)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:389)
        at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.scan(Flow.java:1367)
        at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.visitClassDef(Flow.java:1705)
        at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:687)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:389)
        at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.scan(Flow.java:1367)
        at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.analyzeTree(Flow.java:2370)
        at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.analyzeTree(Flow.java:2353)
        at com.sun.tools.javac.jvm.Gen.genClass(Gen.java:2517)
        at com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:754)
        at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1554)
        at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1518)
        at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:910)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:869)
        at com.sun.tools.javac.main.Main.compile(Main.java:523)
        at com.sun.tools.javac.main.Main.compile(Main.java:381)
        at com.sun.tools.javac.main.Main.compile(Main.java:370)
        at com.sun.tools.javac.main.Main.compile(Main.java:361)
        at com.sun.tools.javac.Main.compile(Main.java:56)
        at com.sun.tools.javac.Main.main(Main.java:42)
gmake[2]: *** [/export/home/hg/repos/jdk8/tl/build/solaris-sparcv9-normal-server-fastdebug/jdk/classes/_the.batch] Error 4
gmake[1]: *** [classes-only] Error 2
make381: *** [jdk-only] Error 2