[Bug middle-end/78879] -fprofile-generate causes undefined reference to `____ilog2_NaN'

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78879

Jeffrey A. Law <law at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #12 from Jeffrey A. Law <law at redhat dot com> ---
b_c_p with two distinct constant values returns 0.

You're missing the fundamental point.  Changing the order is just working
around the core problem in that there are paths where b_c_p may return 0 and
thus you must issue the call to ilog_NaN, which is not provided.

This is a linux kernel bug, not a bug in GCC.