The C++ delayed folding work wants to be able to clear out a hash_map,
and it's trivial to refer to the empty() function from the hash_table.
Tested x86_64-pc-linux-gnu, applying to trunk.
commit 760ba6617d6b7867692aba8c7494e8f08d6109aa
Author: Jason Merrill <ja...@redhat.com>
Date: Fri Nov 13 09:38:32 2015 -0500
* hash-map.h (hash_map::empty): New.
diff --git a/gcc/hash-map.h b/gcc/hash-map.h
index 59794eb..b83708c 100644
--- a/gcc/hash-map.h
+++ b/gcc/hash-map.h
@@ -190,6 +190,8 @@ public:
size_t elements () const { return m_table.elements (); }
+ void empty () { m_table.empty(); }
+
class iterator
{
public:
