Missing LineNumberTable entries with JDK8?

[Vicente-Arturo Romero-Zaldivar]

Hi,

This bug has already been solved by Jan Lahoda.

Changeset: http://hg.openjdk.java.net/jdk8/tl/langtools/rev/8c4b2987edac
original bug id: http://bugs.sun.com/view_bug.do?bug_id=8020689

Thanks,
Vicente

On 19/08/13 09:50, Joel Borggren-Franck wrote:
> Hi Marc,
>
> Thanks for the report. Bug id 8023214.
>
> Should show up here: http://bugs.sun.com/view_bug.do?bug_id=8023214
>
> cheers
> /Joel
>
> In-Reply-To: <51E3B136.4030800 at mountainminds.com>
>
> On 2013-07-15, Marc R. Hoffmann wrote:
>> Hi,
>>
>> I'm currently working on a Java 8 version of the code coverage tool
>> JaCoCo. This tool relies on line number information within class
>> files. Some of our integration tests fail with JDK8, probably due to
>> incomplete line number information.
>>
>> STEPS TO REPRODUCE
>>
>> Compile the source file attached with the lates JDK8 build
>> (1.8.0-ea-b97). Compiled class is also attached.
>>
>> EXPECTED
>>
>> The compiled class files has a LineNumberTable entry for the method
>> invocation b() in line 10.
>>
>> ACTUAL
>>
>> There is no separate LineNumberTable entry for the invocation of
>> b(). So b() appears to be invoked in line 8 instead of 10. See javap
>> output below.
>>
>> The problem seems to be specific to static methods. Line numbers are
>> reported correctly if method b() is an instance method.
>>
>> Best regards,
>> -marc
>>
>>
>>    static void m(boolean);
>>      descriptor: (Z)V
>>      flags: ACC_STATIC
>>      Code:
>>        stack=1, locals=1, args_size=1
>>           0: iload_0
>>           1: ifeq          10
>>           4: invokestatic  #2                  // Method a:()V
>>           7: goto          13
>>          10: invokestatic  #3                  // Method b:()V
>>          13: return
>>        LineNumberTable:
>>          line 7: 0
>>          line 8: 4
>>          line 12: 13
>>        StackMapTable: number_of_entries = 2
>>             frame_type = 10 /* same */
>>             frame_type = 2 /* same */
>>
>> /**
>>   * Reproducer for Java 8 compiler issue where wrong line numbers are reported..
>>   */
>> public class Target01 {
>>
>> 	static void m(boolean flag) {
>> 		if (flag) {
>> 			a();
>> 		} else {
>> 			b(); // Wrong line number for this invocation (8 instead of 10)
>> 		}
>> 	}
>>
>> 	static void a() {
>> 	}
>>
>> 	static void b() {
>> 	}
>>
>> }
>