[Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef

[jsm28 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68162

--- Comment #10 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
I have verified that the patch in comment#7, (a) on its own and (b) together
with my patch, does not cause any regressions on x86_64-pc-linux-gnu.  My
inclination would be that this patch should go in, with a separate issue being
filed in Bugzilla for the extra qualifiers, and then I can put my patch in.