That was how I had originally written the code in my head then I checked the Perl v5.6.0 source code for SvGROW() and saw that such wasn't needed. It might be a problem for Perl versions prior to that, however. I know I jumped through more hoops when I wrote similar XS code ages ago -- I was hoping it had just been my lack of understanding. (:
Update: I was mostly checking sv_grow() which is what the SvGROW() macro calls. See elsewhere in this thread for why I'm wrong above.
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