On Thu, 22 Aug 2024 19:15:13 -0400, Bob Bridges wrote:

>I don't think I see the flaw yet.  How would you define it?  Because all DSDD 
>does is tell me whether a character string represents a (catalogued) DSN 
>and/or an (allocated) DDN; and if the problem you're thinking of is that the 
>situation may have changed milliseconds later, how will any other routine 
>avoid that?  I'm sure you have something in mind, but I don't know what.
> 
<https://www.ibm.com/docs/en/zos/3.1.0?topic=output-requesting-dynamic-allocation>
See:
RTDDN(variable)
        Returns allocated ddname into the REXX variable variable.

The underlying Assembler service is DYNALLOC.  I don't know the related TU.

-- 
gil

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