JDK-6852595 : Accessing scope using JSR199 API on erroneous tree causes Illegal Argument Exception
- Type: Bug
- Component: tools
- Sub-Component: javac
- Affected Version: 7
- Priority: P3
- Status: Closed
- Resolution: Fixed
- OS: generic
- CPU: unknown
- Submitted: 2009-06-18
- Updated: 2012-01-13
- Resolved: 2012-01-13
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| JDK 7 |
|---|
7 b64Fixed  |
Related Reports
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Relates :
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Description
The following programs compiles and runs fine on JDK6/6-open, but it fails at runtime with an IllegalArgumentException with JDK 7
import com.sun.source.util.JavacTask;
import com.sun.source.tree.*;
import java.io.IOException;
import java.net.URI;
import java.util.Arrays;
import javax.tools.JavaCompiler;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;
import javax.tools.ToolProvider;
import com.sun.tools.javac.api.JavacTrees;
import com.sun.tools.javac.tree.JCTree.*;
import com.sun.source.util.TreePath;
import com.sun.source.util.Trees;
class TestAPI {
static class MyFileObject extends SimpleJavaFileObject {
private String text;
public MyFileObject(String text) {
super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
this.text = text;
}
@Override
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return text;
}
}
public static void main(String[] args) throws IOException {
final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
String code = "class BadName { Object o = j; }";
JavacTask ct = (JavacTask)tool.getTask(null, null, null, null, null, Arrays.asList(new MyFileObject(code)));
Iterable<? extends CompilationUnitTree> compUnits = ct.parse();
CompilationUnitTree cu = compUnits.iterator().next();
ClassTree cdef = (ClassTree)cu.getTypeDecls().get(0);
JCVariableDecl vdef = (JCVariableDecl)cdef.getMembers().get(0);
TreePath path = TreePath.getPath(cu, vdef.init);
Trees.instance(ct).getScope(path);
}
}
Output with JDK6 is:
null:0: cannot find symbol
symbol : variable j
location: class BadName
Output with JDK7 is:
Exception in thread "main" java.lang.IllegalArgumentException
at com.sun.tools.javac.util.JCDiagnostic.<init>(JCDiagnostic.java:276)
at com.sun.tools.javac.util.JCDiagnostic$Factory.error(JCDiagnostic.java:86)
at com.sun.tools.javac.util.AbstractLog.error(AbstractLog.java:86)
at com.sun.tools.javac.comp.Resolve$ResolveError.report(Resolve.java:1667)
at com.sun.tools.javac.comp.Resolve.access(Resolve.java:1093)
at com.sun.tools.javac.comp.Resolve.access(Resolve.java:1113)
at com.sun.tools.javac.comp.Resolve.resolveIdent(Resolve.java:1176)
at com.sun.tools.javac.comp.Attr.visitIdent(Attr.java:1755)
at com.sun.tools.javac.tree.JCTree$JCIdent.accept(JCTree.java:1679)
at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:396)
at com.sun.tools.javac.comp.Attr.attribExprToTree(Attr.java:301)
at com.sun.tools.javac.api.JavacTrees.attribExprToTree(JavacTrees.java:302)
at com.sun.tools.javac.api.JavacTrees.getAttrContext(JavacTrees.java:282)
at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:199)
at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:78)
at TestAPI.main(TestAPI.java:41)
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