[Mibble-users] NullPointerException

[Markus Barchfeld]

Hi!

I evaluated some MIB parsers and mibble crunched bravely through more 
than 160 MIB files, but it produced one NullPointerException with a 
particular erroneous MIB file. I have created a minimal MIB file, which 
shows the problem, see below.

The problem arises when Unsigned32 is defined, but throws NPE if not. I 
would have expected a "undefined symbol" error - which occurs after 
removing the revealNpeMibEntry definition.

Would it be much effort to fix this?

Thanks
Markus



REVEAL-NPE-MIB DEFINITIONS ::= BEGIN

revealNpeMib MODULE-IDENTITY
      LAST-UPDATED    "0701161535Z"
      ORGANIZATION    "NONE"
      CONTACT-INFO    "mbarchfeld"
      DESCRIPTION     "Shows a NullPointerException of mibble parser"
      ::= { iso 21 }
-- uncomment the following definition of Unsigned32 and the mibble 
parser will
-- parse this file just fine

-- Unsigned32 ::=
--   [APPLICATION 2]
--      IMPLICIT INTEGER (0..4294967295)           BasedOnUnknownSyntax 
::= TEXTUAL-CONVENTION
      STATUS      current
      DESCRIPTION "None."
      SYNTAX      Unsigned32

-- if the revealNpeMibEntry definition is removed, the parser shows
-- Error: in C:\Temp\REVEAL-NPE-MIB.txt: line 20:
--    undefined symbol 'Unsigned32'
--
--       SYNTAX      Unsigned32
--                    ^

revealNpeMibEntry OBJECT-TYPE
      SYNTAX      NPESyntax        MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION "None."
          ::= { revealNpeMib 1 }

NPESyntax ::=
      SEQUENCE {
          entry          BasedOnUnknownSyntax
      }      
               END