False positives (pointers that point to nowhere but happen to point into
the heap) would result in the block just before that pointer to be
marked. This is clearly not intended, so ignore such a pointer.
This is directly useful to avoid some unsafety around runtime.alloc and
should be useful in general.
This pragma has the same form as in the main Go compiler:
https://github.com/golang/go/issues/12312
dumb -> leaking:
make it more clear what this "GC" does: leak everything.
marksweep -> conservative:
"marksweep" is too generic, use "conservative" to differentiate
between future garbage collectors: precise marksweep / mark-compact /
refcounting.
Ayke van Laethem