=item PERL_DEBUG_MSTATS
-Relevant only if your perl executable was built with B<-DDEBUGGING_MSTATS>,
+Relevant only if perl is compiled with the malloc included with the perl
+distribution (that is, if C<perl -V:d_mymalloc> is 'define'),
if set, this causes memory statistics to be dumped after execution. If set
to an integer greater than one, also causes memory statistics to be dumped
after compilation.