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From OC <...@ocs.cz>
Subject looks like a missing exception harness in a typechecker somewhere?
Date Mon, 11 Jul 2016 21:26:34 GMT
Hi there,

with a pretty complex and heavily AST-transformed code, which, nevertheless, *without typechecking
builds and runs all right*, with a typechecker compilation crashes in the following way (Groovy
2.4.7).

The problem might well be caused by a mistake in my own typechecking extension script (which,
essentially, turns all typechecker errors to warnings); still, though, I think the compiler
should not crash this way (instead, it might report a reasonable error):

===
>>> a serious error occurred: BUG! exception in phase 'instruction selection' in
source unit '/Users/ocs/Projects/WO_XC_ProBOIS/SberDat2/../OCShared/src/scomponents/DFEOList.groovy'
unexpected NullpointerException
>>> stacktrace:
BUG! exception in phase 'instruction selection' in source unit '/Users/ocs/Projects/WO_XC_ProBOIS/SberDat2/../OCShared/src/scomponents/DFEOList.groovy'
unexpected NullpointerException
	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1058)
	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:591)
	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:569)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:546)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:525)
	at org.codehaus.groovy.tools.FileSystemCompiler.compile(FileSystemCompiler.java:61)
	at org.codehaus.groovy.tools.FileSystemCompiler.doCompilation(FileSystemCompiler.java:217)
	at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompile(FileSystemCompiler.java:150)
	at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompileWithErrorHandling(FileSystemCompiler.java:180)
	at org.codehaus.groovy.tools.FileSystemCompiler.main(FileSystemCompiler.java:164)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.codehaus.groovy.tools.GroovyStarter.rootLoader(GroovyStarter.java:109)
	at org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:131)
Caused by: java.lang.NullPointerException
	at org.codehaus.groovy.ast.tools.WideningCategories.parameterizeLowestUpperBound(WideningCategories.java:237)
	at org.codehaus.groovy.ast.tools.WideningCategories.lowestUpperBound(WideningCategories.java:211)
	at org.codehaus.groovy.ast.tools.WideningCategories.parameterizeLowestUpperBound(WideningCategories.java:250)
	at org.codehaus.groovy.ast.tools.WideningCategories.lowestUpperBound(WideningCategories.java:211)
	at org.codehaus.groovy.ast.tools.WideningCategories.lowestUpperBound(WideningCategories.java:163)
	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.popAssignmentTracking(StaticTypeCheckingVisitor.java:3256)
	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitIfElse(StaticTypeCheckingVisitor.java:3215)
	at org.codehaus.groovy.ast.stmt.IfStatement.visit(IfStatement.java:43)
	at org.codehaus.groovy.ast.CodeVisitorSupport.visitBlockStatement(CodeVisitorSupport.java:37)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitBlockStatement(ClassCodeVisitorSupport.java:166)
	at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:71)
	at org.codehaus.groovy.ast.CodeVisitorSupport.visitTryCatchFinally(CodeVisitorSupport.java:84)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitTryCatchFinally(ClassCodeVisitorSupport.java:231)
	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitTryCatchFinally(StaticTypeCheckingVisitor.java:3361)
	at org.codehaus.groovy.ast.stmt.TryCatchStatement.visit(TryCatchStatement.java:44)
	at org.codehaus.groovy.ast.CodeVisitorSupport.visitBlockStatement(CodeVisitorSupport.java:37)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitBlockStatement(ClassCodeVisitorSupport.java:166)
	at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:71)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:104)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructorOrMethod(ClassCodeVisitorSupport.java:115)
	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitConstructorOrMethod(StaticTypeCheckingVisitor.java:1784)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:126)
	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.startMethodInference(StaticTypeCheckingVisitor.java:2119)
	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethod(StaticTypeCheckingVisitor.java:2078)
	at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1078)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:53)
	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitClass(StaticTypeCheckingVisitor.java:249)
	at org.codehaus.groovy.transform.StaticTypesTransformation.visit(StaticTypesTransformation.java:66)
	at org.codehaus.groovy.transform.ASTTransformationVisitor.visitClass(ASTTransformationVisitor.java:134)
	at org.codehaus.groovy.transform.ASTTransformationVisitor$2.call(ASTTransformationVisitor.java:178)
	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1053)
===

All the best,
OC


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