[Bug sanitizer/92634] [8/9/10 regression] -fsanitize=undefined erroneous null pointer check

[amodra at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92634

--- Comment #7 from Alan Modra <amodra at gmail dot com> ---
Here's another example, a typical offsetof.

#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)