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From: wiml@milton.u.washington.edu (William Lewis)
Newsgroups: comp.sys.next
Subject: Re: pswrap problems
Message-ID: <17346@milton.u.washington.edu>
Date: 28 Feb 91 03:58:23 GMT
References: <Qbn4CxC00WBM81_YVm@andrew.cmu.edu>
Organization: University of Washington, Seattle
Lines: 28

In article <Qbn4CxC00WBM81_YVm@andrew.cmu.edu> jl3p+@andrew.cmu.edu (James Ting Lui) writes:
>    defineps dojunk( float junk )
>    (***)
>    junk
>    (*** junk ***)
>    pstack
>    clear
>    endps

   (leads to)

>    DPS client library error: PostScript program error, DPSContext 124150
>    %%[ Error: undefinedresult; OffendingCommand: bin obj seq, type=128,
>  elements=3, size=28 ]%%


      Basically, the trouble is that pswrapped functions aren't supposed
to send anything back on stdout. The manual says this somewhere. What's 
probably happening is that the binary object sequence containing the
results of "pstack" are interpreted by the unwary C half of the pswrap
as being some sort of return data, causing confusion & wreaking havoc.



-- 
 wiml@milton.acs.washington.edu       Seattle, Washington   
     (William Lewis)   |  47 41' 15" N   122 42' 58" W  
 "Just remember, wherever you go ... you're stuck there."