[Bug target/91229] RISC-V ABI problem with zero-length bit-fields and float struct fields

[wilson at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91229

--- Comment #2 from Jim Wilson <wilson at gcc dot gnu.org> ---
Created attachment 46617
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46617&action=edit
proposed patch to change ABI and warn for affected structs