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

[Ben Romberg (JIRA)]

     [ https://issues.jboss.org/browse/JASSIST-207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ben Romberg updated JASSIST-207:
--------------------------------

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

{code}
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"));
	}

}
{code}

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

  was:
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


    
> 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:
> {code}
> 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"));
> 	}
> }
> {code}
> 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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