[Oorexx-bugs] [ oorexx-Bugs-3141543 ] ::REQUIRES circularity nonobvious failure

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Bugs item #3141543, was opened at 2010-12-22 06:04
Message generated for change (Tracker Item Submitted) made by gaffe77
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Category: Interpreter
Group: v4.1
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Geoff Stevens (gaffe77)
Assigned to: Nobody/Anonymous (nobody)
Summary: ::REQUIRES circularity nonobvious failure

Initial Comment:
Environment: Win 7

See bug 3141401, note this report has updated code attached. The circular ::REQUIRES references diagnosed as illegal in 3141401 cause a nonobvious runtime failure. I ran into it while refactoring some code and spent a fine old time finding out what I'd done wrong. 

Note that init code in both packages has run without error and at the point of failure .context~package~importedpackages appears to know everything about the class1 class which can't be instantiated.

Some indication at runtime that a circular reference can't be resolved (rather than an uninitialised variable not understanding message "new") would be ideal, but at least mentioning the illegality of the situation with an illustration of the problem in the reference under 3.6 ::REQUIRES might help a lot.

Output of *new* *improved* test program: 

C:\Users\gs\exlibris\rexx\requirestest>rtest
class2 init
class1 init
REXX-ooRexx_4.1.0(MT) 6.03 5 Dec 2010
class1 test The CLASS2 class
imported package C:\Users\gs\exlibris\rexx\requirestest\class2.cls contains
 class The CLASS2 class contains
  method COPY
  method RUN
  method START
  method STARTWITH
  method IDENTITYHASH
  method SETMETHOD
  method HASHCODE
  method INSTANCEMETHODS
  method UNSETMETHOD
  method <>
  method TESTME
  method \=
  method OBJECTNAME
  method SEND
  method INSTANCEMETHOD
  method ISA
  method ISINSTANCEOF
  method ||
  method
  method INIT
  method OBJECTNAME=
  method STRING
  method DEFAULTNAME
  method HASMETHOD
  method SENDWITH
  method ><
  method REQUEST
  method
  method ==
  method CLASS
  method =
  method \==
 contains init? 1
class2 test .CLASS1
imported package C:\Users\gs\exlibris\rexx\requirestest\class1.cls contains
 class The CLASS1 class contains
  method COPY
  method RUN
  method START
  method STARTWITH
  method IDENTITYHASH
  method SETMETHOD
  method HASHCODE
  method INSTANCEMETHODS
  method UNSETMETHOD
  method <>
  method TESTME
  method \=
  method OBJECTNAME
  method SEND
  method INSTANCEMETHOD
  method ISA
  method ISINSTANCEOF
  method ||
  method
  method INIT
  method OBJECTNAME=
  method STRING
  method DEFAULTNAME
  method HASMETHOD
  method SENDWITH
  method ><
  method REQUEST
  method
  method ==
  method CLASS
  method =
  method \==
 contains init? 1
    23 *-* c1 = .class1~new
     7 *-* tc2~testme
Error 97 running C:\Users\gs\exlibris\rexx\requirestest\class2.cls line 23:  Object method not found
Error 97.1:  Object ".CLASS1" does not understand message "NEW"

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