stub out your gc without hacking on druntime

[Adam D. Ruppe via Digitalmars-d]

On Thursday, 30 June 2016 at 04:07:03 UTC, Hiemlick Hiemlicker 
wrote:
> Can one use this to hook in to any phobo's lib functions?

Yeah, you could. Easier though is to just copy the phobos lib 
file, modify it, then compile it into your program explicitly:

cp dmd2/src/phobos/std/file.d .
# edit your local ./file.d to play with it
dmd yourprogram.d your_other_modules.d file.d


notice that I added the copied Phobos file to the compile command 
line. Then the compiler will prefer the one from your file to the 
one in Phobos itself. Nothing else needs to change, you still 
import std.file;

> Can we call the original functions somehow?

No, with this technique the linker will remove the original 
functions from the program.