Javac internal error compiling lambdas (original) (raw)

Martin Buchholz martinrb at google.com
Mon Apr 1 11:00:10 PDT 2013

Hi lambdafolk,

This is a bug report. Using very recent lambda javac:

$ (cat Lambda.java && echo --- && javac Lambda.java) public class Lambda { public static void main(String[] args) throws Throwable { Runnable[] rs = { () -> { String x = null; }, () -> { String x = null; }, }; } }

An exception has occurred in the compiler (1.8.0-internal). 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.NullPointerException at com.sun.tools.javac.comp.Flow$AliveAnalyzer.visitVarDef(Flow.java:491) at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:828) at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49) at com.sun.tools.javac.comp.Flow$AliveAnalyzer.scanStat(Flow.java:409) at com.sun.tools.javac.comp.Flow$AliveAnalyzer.scanStats(Flow.java:417) at com.sun.tools.javac.comp.Flow$AliveAnalyzer.visitBlock(Flow.java:501) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:884) at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49) at com.sun.tools.javac.comp.Flow$AliveAnalyzer.scanStat(Flow.java:409) at com.sun.tools.javac.comp.Flow$AliveAnalyzer.visitLambda(Flow.java:694) at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1590) at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49) at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:57) at com.sun.tools.javac.tree.TreeScanner.visitNewArray(TreeScanner.java:216) at com.sun.tools.javac.tree.JCTree$JCNewArray.accept(JCTree.java:1537) at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49) at com.sun.tools.javac.comp.Flow$AliveAnalyzer.analyzeTree(Flow.java:722) at com.sun.tools.javac.comp.Flow.analyzeLambda(Flow.java:227) at com.sun.tools.javac.comp.Attr.visitLambda(Attr.java:2381) at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1590) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:603) at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:621) at com.sun.tools.javac.comp.Attr.attribExprs(Attr.java:656) at com.sun.tools.javac.comp.Attr.visitNewArray(Attr.java:2238) at com.sun.tools.javac.tree.JCTree$JCNewArray.accept(JCTree.java:1537) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:603) at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:621) at com.sun.tools.javac.comp.Attr.visitVarDef(Attr.java:1083) at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:828) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:603) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:648) at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:664) at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1121) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:884) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:603) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:648) at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1023) at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:771) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:603) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:648) at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4169) at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4077) at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4011) at com.sun.tools.javac.comp.Attr.attrib(Attr.java:3985) at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1256) at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:909) at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:868) at com.sun.tools.javac.main.Main.compile(Main.java:516) at com.sun.tools.javac.main.Main.compile(Main.java:376) at com.sun.tools.javac.main.Main.compile(Main.java:365) at com.sun.tools.javac.main.Main.compile(Main.java:356) at com.sun.tools.javac.Main.compile(Main.java:77) at com.sun.tools.javac.Main.main(Main.java:62)

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