# New Ticket Created by Matt Diephouse # Please include the string: [perl #34452] # in the subject line of all future correspondence about this issue. # <URL: https://rt.perl.org/rt3/Ticket/Display.html?id=34452 >
This TODO item is from an email from Leo, reproduced below with some context. Message-ID: <[EMAIL PROTECTED]> --------Original Message-------- William Coleda <[EMAIL PROTECTED]> wrote: > Given the perldoc for src/extend.c, > > Â Â Â "void* Parrot_call_sub(Parrot_INTERP interpreter, Parrot_PMC sub, const > Â Â Â char *signature, ...)" > Â Â Â Â Â Call a parrot subroutine the given function signature. The first > Â Â Â Â Â char in "signature" denotes the return value. Next chars are argu- > Â Â Â Â Â ments. > > Â Â Â Â Â The return value of this function can be void or a pointer type. > > If only the first character is the return value, how does one deal > with subroutines that return Âmultiple values? Well, you can't access multiple return values from within the C function, where you are calling the PIR code. OTOH, if the PIR code did return more values, we should get them back to the caller. We should probably have a new return signature for this, e.g. Â"@" - collect all return values, stuff them into an array and return Âthat. OTOH you could use Parrot_runops_fromc() and pick up return values from the returned frame pointer C<bp>. leo
