[Bug libstdc++/64535] Emergency buffer for exception allocation too small

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64535

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 34399
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34399&action=edit
patch fixing comment #4

This fixes the issue in comment #4 (it also decreases the emergency EH object
size).