Bugzilla – Full Text Bug Listing
| Summary: | Wrong type for class constants in stackmap frames | ||||||||
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| Product: | [Eclipse Project] JDT | Reporter: | ulf.brosziewski | ||||||
| Component: | Core | Assignee: | Olivier Thomann <Olivier_Thomann> | ||||||
| Status: | VERIFIED FIXED | QA Contact: | |||||||
| Severity: | normal | ||||||||
| Priority: | P3 | CC: | ahunter.eclipse, david_audel, jarthana, philippe_mulet | ||||||
| Version: | 3.4.1 | ||||||||
| Target Milestone: | 3.5 M7 | ||||||||
| Hardware: | PC | ||||||||
| OS: | Windows XP | ||||||||
| Whiteboard: | |||||||||
| Attachments: |
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This does not belong in the tools cross-project component. Is this an Eclipse JDT issue? Resolving as NOT_ECLIPSE, Ulf will need to reopen on the right spot. I'm sorry about that error. It *is* a JDT issue. Created attachment 133366 [details]
Proposed fix
Trivial fix. I'll add a regression test for it. Created attachment 133367 [details]
Proposed fix + regression test
Same patch with corresponding regression test.
Released for 3.5M7. Regression test added in org.eclipse.jdt.core.tests.compiler.regression.StackMapAttributeTest#test042 Verified for 3.5M7 using build I20090428-0100 |
To reproduce the bug, compile the following class (compliance level 1.6) and run its main method with java -XX:-FailOverToOldVerifier StackMapBug public class StackMapBug { private static void dummy(Class<?> c, int n) { } public static void main(String... args) { dummy(Integer.class, (args == null ? -1 : 1)); } } The JVM (JDK 1.6.0_10, Win32) exits with Exception in thread "main" java.lang.VerifyError: Inconsistent stackmap frames at branch target 10 in method StackMapBug.main([Ljava/lang/String;)V at offset 3 In the two stackmap frames for the main method, the type of the first stack item is specified as java/lang/Integer (instead of java/lang/Class). Here is a part of the javap output for the example class: StackMapTable: number_of_entries = 2 frame_type = 74 /* same_locals_1_stack_item */ stack = [ class java/lang/Integer ] frame_type = 255 /* full_frame */ offset_delta = 0 locals = [ class "[Ljava/lang/String;" ] stack = [ class java/lang/Integer, int ]