[PATCH] Double magic/warnings with binmode $fh, undef

Hi.
binmode $fh, $x calls get magic twice on $x and triggers "undefined"
warnings twice too when $x isn't defined. The attached patch fixes this by
making doio.c:Perl_mode_from_discipline() take a const char * and the
according STRLEN as arguments instead of a SV, so that we can remove the
SvPV_const() inside. This changes the interface but since it's not part of
the public API it should be OK. Regen and tested against 33763.
Vincent.

• [PATCH] Double magic/warnings with binmode $fh, undef by Vincent Pit
• Re: [PATCH] Double magic/warnings with binmode $fh, undef by Rafael Garcia-Suarez