It is a set of fields separated by semicolons, which each field is a count
(defaulting to zero) and an optional atsign and percentage (defaulting
to 100). If the count is zero, then it lasts forever. For example,
-C<100;@25> means the first 100 allocations pass, then all other allocations
-(until the program exits or crashes) have the rest have a 25% chance of
+C<100;@25> or C<100@0;0@25> means the first 100 allocations pass, then all
+other allocations (until the program exits or crashes) have a 25% chance of
failing.
If the variable B<OPENSSL_MALLOC_FD> is parsed as a positive integer, then