tweak comment

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@44942 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/except.c b/gcc/except.c
index a23756268a7abc191c2b633289912d110a9a04e2..599f188bdc8c9f7acfbf988523eac8ee3c4f77a0 100644 (file)
--- a/gcc/except.c
+++ b/gcc/except.c
@@ -834,7 +834,11 @@ expand_end_all_catch ()
 
 /* End an exception region for an exception type filter.  ALLOWED is a
    TREE_LIST of types to be matched by the runtime.  FAILURE is an
-   expression to invoke if a mismatch ocurrs.  */
+   expression to invoke if a mismatch ocurrs.
+
+   ??? We could use these semantics for calls to rethrow, too; if we can
+   see the surrounding catch clause, we know that the exception we're
+   rethrowing satisfies the "filter" of the catch type.  */
 
 void
 expand_eh_region_end_allowed (allowed, failure)