Note that sv_2mortal isn't just "increase reference count by 1, and

mark that it needs a deferred recount"

p4raw-id: //depot/perl@23011

diff --git a/sv.c b/sv.c
index db872e1..4e519a1 100644 (file)
--- a/sv.c
+++ b/sv.c
@@ -7574,7 +7574,9 @@ Perl_sv_newmortal(pTHX)
 
 Marks an existing SV as mortal.  The SV will be destroyed "soon", either
 by an explicit call to FREETMPS, or by an implicit call at places such as
-statement boundaries.  See also C<sv_newmortal> and C<sv_mortalcopy>.
+statement boundaries.  SvTEMP() is turned on which means that the SV's
+string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal>
+and C<sv_mortalcopy>.
 
 =cut
 */