[jboss-jira] [JBoss JIRA] (JASSIST-207) Inconsistent Stack Map when inserting throw Expression with Java 7

[Ben Romberg (JIRA)]

Ben Romberg created JASSIST-207:
-----------------------------------

             Summary: Inconsistent Stack Map when inserting throw Expression with Java 7
                 Key: JASSIST-207
                 URL: https://issues.jboss.org/browse/JASSIST-207
             Project: Javassist
          Issue Type: Bug
    Affects Versions: 3.18.0-GA
            Reporter: Ben Romberg
            Assignee: Shigeru Chiba
            Priority: Critical


I wrote a unit-test for javassist, reproducing the issue:

public class ThrowExpressionCorruptsStackMapTableTest extends JvstTestRoot {
	public ThrowExpressionCorruptsStackMapTableTest(String name) {
		super(name);
	}

	public void testInsertLocalVars() throws Exception {
		CtClass cc = sloader.get("test4.LocalVars");

		CtMethod m1 = cc.getDeclaredMethod("run");
		m1.insertBefore("throw new AssertionError((Object) \"assertion error\");");

		cc.writeFile();
		Object obj = make(cc.getName());
		assertEquals(10, invoke(obj, "run"));
	}

}

Throws:
java.lang.VerifyError: Expecting a stack map frame in method test4.LocalVars.run()I at offset 45

My use-case is almost the same, inserting a "throw AssertionError(...)" expression with insertBefore. However, I get a slightly different error message:

Stack map does not match the one at exception handler 37 in method timeofday.TimeOfDay.getSecond()I at offset 27

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