Comment 6 for bug 2051695

Thanks Pushkar, nice work on this so far.
Looks like upstream has a better version of the fix, I'd be more comfortable with that version.
https://github.com/ccache/ccache/commit/69def064cbf99a8987a7c7736a3d1894d3a11e2c

I suggest pulling in that fix as a patch rather than adjusting the ADT restrictions. What do you think?