https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111808
--- Comment #2 from Martin Uecker <muecker at gwdg dot de> --- On i386 1. / 3. is computed with higher precision than double and then the initializer changes the value which is a contraint violation in C23. But whether this happens or not depends on the architecture, so this code is not portable.
