[Bug c/63645] Incorrect code generation

[terra at gnome dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63645

--- Comment #18 from M Welinder <terra at gnome dot org> ---
The example at strict-aliasing in the gcc man page covers a different
situation: you don't get to access a double via an int.

I get it.

But the standard says that in certain circumstances you really do get
to access one structure via the fields of another.  I quoted that part
for you.

So if undefined behaviour is going on, it's something else.  It is
possible, I guess, but hand waving doesn't establish it.