https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95681
--- Comment #4 from Stefan Schulze Frielinghaus <stefansf at linux dot ibm.com> --- Running todays mainline (d97d71a1989) using options -O3 -Wall against the reduced program on x86 as well as s390x results in t.c: In function 'decNumberCompareTotalMag': t.c:55:14: warning: '*allocbufa.bits' may be used uninitialized [-Wmaybe-uninitialized] 55 | a->bits&=~0x80; | ^~ t.c:70:14: warning: '*allocbufb.bits' may be used uninitialized [-Wmaybe-uninitialized] 70 | b->bits&=~0x80; | ^~