54 lines
1.8 KiB
Java
54 lines
1.8 KiB
Java
/*
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* @test /nodynamiccopyright/
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* @bug 8061778
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* @summary Wrong LineNumberTable for default constructors
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* @enablePreview
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*/
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import java.util.List;
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import java.lang.classfile.*;
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import java.lang.classfile.attribute.*;
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import java.io.IOException;
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public class NestedLineNumberTest {
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public static void main(String[] args) throws Exception {
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List<LineNumberInfo> lines = findEntries();
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if (lines == null || lines.size() != 1) {
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int found = lines == null ? 0 : lines.size();
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error(String.format("LineNumberTable contains wrong number of entries - expected %d, found %d", 1, found));
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}
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int line = lines.get(0).lineNumber();
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if (line != 50) {
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error(String.format("LineNumberTable contains wrong line number - expected %d, found %d", 50, line));
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}
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}
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static List<LineNumberInfo> findEntries() throws IOException {
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ClassModel self = ClassFile.of().parse(NestedLineNumberTest.Test.class.getResourceAsStream("NestedLineNumberTest$Test.class").readAllBytes());
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for (MethodModel m : self.methods()) {
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if ("<init>".equals(m.methodName().stringValue())) {
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CodeAttribute code_attribute = m.findAttribute(Attributes.code()).orElseThrow();
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for (Attribute<?> at : code_attribute.attributes()) {
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if (at instanceof LineNumberTableAttribute lineAt) {
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return lineAt.lineNumbers();
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}
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}
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}
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}
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return null;
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}
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static void error(String msg) {
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throw new AssertionError(msg);
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}
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// The default constructor in this class should get only one LineNumberTable entry,
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// pointing to the first line of the declaration of class Test.
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static class Test {
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static class Empty { }
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}
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}
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