https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109903
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |INVALID
Status|UNCONFIRMED |RESOLVED
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
You need to use an early clobber on the output constraint as documented.
https://gcc.gnu.org/onlinedocs/gcc-13.1.0/gcc/Modifiers.html#index-earlyclobber-operand
