(Retracted by #12138)

(Retracted by #12138)

Add -woff (turn warning off) 3187:
"A pointer is converted to a smaller integer."
This happens when your pointers are 64-bit: then every case
of converting pointers to PADOFFSETs (explicitly 32-bit)
faces truncation (even explicit use of INT2PTR doesn't help).
CxITERVAR(), POPLOOP(), and PUSHLOOP() are afflicted.
Changing PADOFFSET from U32 to UV would help, but that
would break binary backward compatibility of BASEOP and padop
(assuming you have been using 64-bit pointers).

p4raw-id: //depot/perl@12134