re PR middle-end/39659 (ICE building libstdc++v3 functexcept.cc)

	PR middle-end/39659
	* except.c (remove_unreachable_regions): Propagate may_contain_throw
	flag.

From-SVN: r145589

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fff2d81..17ebd6d 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2009-04-06  Jan Hubicka  <jh@suse.cz>
+
+       PR middle-end/39659
+       * except.c (remove_unreachable_regions): Propagate may_contain_throw
+       flag.
+
 2009-04-06  Andrew Stubbs  <ams@codesourcery.com>
 
        * config/sh/lib1funcs.asm (ic_invalidate): Move ICBI out of the

diff --git a/gcc/except.c b/gcc/except.c
index e0e90d2..e92b827 100644 (file)
--- a/gcc/except.c
+++ b/gcc/except.c
@@ -853,6 +853,7 @@ remove_unreachable_regions (sbitmap reachable, sbitmap contains_stmt)
                     r->region_number,
                     first_must_not_throw->region_number);
          remove_eh_handler_and_replace (r, first_must_not_throw);
+         first_must_not_throw->may_contain_throw |= r->may_contain_throw;
        }
       else
        bring_to_root (r);