[Bug c++/79687] [5/6/7 Regression] Wrong code with pointer-to-member

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79687

--- Comment #12 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
What's changed in r231197 is that previously we had
return <retval> = (int) ((long int) ((char *) &a + (sizetype) q) - (long int)
&a.c);
but now
return <retval> = (int) ((long int) ((char *) &a + 18446744073709551615) -
(long int) &a.c);