https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78458
--- Comment #8 from Peter Bergner <bergner at gcc dot gnu.org> --- Last one, I promise. We don't need _Complex at all: extern void bar (void); long double foo (long double p1) { bar (); asm volatile ("# clobbers" ::: "r14", "r15", "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31"); return p1; }