I think this is a matter of semantics. A particular buffer, once allocated, has size SvLEN() and never shrinks. However, that buffer can (under some circumstances) be freed and a different buffer allocated with a smaller SvLEN().

Dave.

In reply to Re^5: [XS] sv_setpv change in behaviour with perl-5.42.0 and later by dave_the_m
in thread [XS] sv_setpv change in behaviour with perl-5.42.0 and later by syphilis

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