Use of mcheck during GDB development

Florian Weimer
2016-11-15T16:00:50Z

We need to get rid of the mcheck functionality in glibc because we
really, really want to stop calling the malloc hook functions.

A future glibc version will provide a lightweight heap checker, with
functionality comparable to mcheck (but thread-safe!) as linkable and
LD_PRELOAD-able (perhaps under a different name than libmcheck).

How critical is the mcheck functionality to GDB development? Would it
be a problem if next glibc release would issue a deprecation warning
without actually having a suitable replacement in-tree?

I want to get the deprecation notice out as soon as possible, but I
might not be able to finish the mcheck replacement in time for the next
glibc release.

Thanks,
Florian