[Bug libgcc/71744] Concurrently throwing exceptions is not scalable

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71744

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 38852
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38852&action=edit
gcc7-pr71744.patch

Untested patch for the old-style registry.  But as long as glibc still takes a
global lock it probably doesn't help that much.