[Mono-bugs] [Bug 689493] New: ConsiderAddingInterfaceRule incorrectly matches together private nested interfaces with same signatures (also found another hidden bug)

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Sun Apr 24 11:45:34 EDT 2011


https://bugzilla.novell.com/show_bug.cgi?id=689493

https://bugzilla.novell.com/show_bug.cgi?id=689493#c0


           Summary: ConsiderAddingInterfaceRule incorrectly matches
                    together private nested interfaces with same
                    signatures (also found another hidden bug)
    Classification: Mono
           Product: Mono: Tools
           Version: 2.10.x
          Platform: 64bit
        OS/Version: Windows 7
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Gendarme
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: ethan_j_brown at hotmail.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534.29
(KHTML, like Gecko) Chrome/12.0.733.0 Safari/534.29

NOTE: There are two bugs here, but only one test case, as I didn't have time to
fully determine the root cause of the second and write a test for it (could be
in TypeRocks.cs).

See the test case provided here:
https://github.com/Iristyle/mono-tools/commit/cbb217b82f86b390c6f619c07b5085684835de7f

The code as written will demonstrate the incorrect matching of private
interfaces.

There is another bug in the code, where if those interfaces coincidentally
happened to be the same name (even though they're privately nested in different
types) then a naming match would be met incorrectly.  Since this bug could
affect other scenarios, I documented how to trace through and see it in action
-- i.e. rename ILooksLikeNestedInterface to INestedInterface and watch the code
run at line 170 of ConsiderAddingInterfaceRule.cs.  The code determines the
interfaces are the same interface based on name, but this is not correct.

Reproducible: Always

Steps to Reproduce:
1.Run pushed up test code
2.
3.
Actual Results:  
Failure

Expected Results:  
Success

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