https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92069
--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
Reduced source code is
a, c, d;
double b;
e() {
for (; d; d++) {
double f;
a = 2;
for (; a; a++) {
c = b;
b = f;
f = c;
}
}
}