[Bug c++/55135] [4.8 Regression] Segfault of gcc on a big file

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55135

--- Comment #21 from Steven Bosscher <steven at gcc dot gnu.org> 2013-03-05 14:45:32 UTC ---
Author: steven
Date: Tue Mar  5 14:45:23 2013
New Revision: 196464

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196464
Log:
gcc/
    PR c++/55135
    * except.h (remove_unreachable_eh_regions): New prototype.
    * except.c (remove_eh_handler_splicer): New function, split out
    of remove_eh_handler.
    (remove_eh_handler): Use remove_eh_handler_splicer.  Add comment
    warning about running it on many EH regions one at a time.
    (remove_unreachable_eh_regions_worker): New function, walk the
    EH tree in depth-first order and remove non-marked regions.
    (remove_unreachable_eh_regions): New function.
    * tree-eh.c (mark_reachable_handlers): New function, split out
    from remove_unreachable_handlers.
    (remove_unreachable_handlers): Use mark_reachable_handlers and
    remove_unreachable_eh_regions.
    (remove_unreachable_handlers_no_lp): Use mark_reachable_handlers
    and remove_unreachable_eh_regions.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/except.c
    trunk/gcc/except.h
    trunk/gcc/tree-eh.c