Brian,
While reading perlguts, I ran across a note which runs counter to the
examples listed in the Inline C Cookbook.
> In the SvPV macro, the length of the string returned
> is placed into the variable len (this is a macro, so
> you do not use &len). If you do not care what the
> length of the data is, use the SvPV_nolen macro.
> Historically the SvPV macro with the global variable
> PL_na has been used in this case. But that can be quite
> inefficient because PL_na must be accessed in
> thread-local storage in threaded Perl.
SvPV(SV*, STRLEN len) is used throught the all the Inline C examples.
Is there a reason why SvPV_nolen should not be used instead?
