[Bug libstdc++/88264] Support glibc-style tunables for

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88264

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-04-11
     Ever confirmed|0                           |1

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The emergency EH pool size should be tunable too.

From libsupc++/eh_alloc.cc:

      // Allocate the arena - we could add a GLIBCXX_EH_ARENA_SIZE environment
      // to make this tunable.
      arena_size = (EMERGENCY_OBJ_SIZE * EMERGENCY_OBJ_COUNT
                    + EMERGENCY_OBJ_COUNT * sizeof
(__cxa_dependent_exception));
      arena = (char *)malloc (arena_size);