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/*
* @test /nodynamiccopyright/
* @bug 8061778
* @summary Wrong LineNumberTable for default constructors
*/
import java.util.List;
import java.lang.classfile.*;
import java.lang.classfile.attribute.*;
import java.io.IOException;
public class NestedLineNumberTest {
public static void main(String[] args) throws Exception {
List<LineNumberInfo> lines = findEntries();
if (lines == null || lines.size() != 1) {
int found = lines == null ? 0 : lines.size();
error(String.format("LineNumberTable contains wrong number of entries - expected %d, found %d", 1, found));
}
int line = lines.get(0).lineNumber();
if (line != 49) {
error(String.format("LineNumberTable contains wrong line number - expected %d, found %d", 49, line));
}
}
static List<LineNumberInfo> findEntries() throws IOException {
ClassModel self = ClassFile.of().parse(NestedLineNumberTest.Test.class.getResourceAsStream("NestedLineNumberTest$Test.class").readAllBytes());
for (MethodModel m : self.methods()) {
if ("<init>".equals(m.methodName().stringValue())) {
CodeAttribute code_attribute = m.findAttribute(Attributes.code()).orElseThrow();
for (Attribute<?> at : code_attribute.attributes()) {
if (at instanceof LineNumberTableAttribute lineAt) {
return lineAt.lineNumbers();
}
}
}
}
return null;
}
static void error(String msg) {
throw new AssertionError(msg);
}
// The default constructor in this class should get only one LineNumberTable entry,
// pointing to the first line of the declaration of class Test.
static class Test {
static class Empty { }
}
}
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