position.java

来自「是一款用JAVA 编写的编译器 具有很强的编译功能」· Java 代码 · 共 29 行

/*
 * @test  /nodynamiccopyright/
 * @bug 4469737
 * @summary Verify the source position for assertions.
 * @author gafter
 *
 * @compile -source 1.4 Position.java
 * @run main Position
 */

public class Position {
    static public void main(String[] args) {
	Position.class.getClassLoader().setClassAssertionStatus("U", true);
	new U().main();
    }
}
class U {
    void main() {
	try {
	    assert false; // line 20
	} catch (Throwable t) {
	    if (t.getStackTrace()[0].getLineNumber() == 20) {
		return; // passed
	    }
	}
	throw new Error("failed 4469737");
    }
}