From patchwork Mon Jan 28 21:30:08 2013
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Subject: [1/2, asan] Allow creating/deleting hash table entries with new/delete
Date: Mon, 28 Jan 2013 11:30:08 -0000
From: Dodji Seketeli <dodji@redhat.com>
X-Patchwork-Id: 216375
Message-Id: <87ip6hxafz.fsf@redhat.com>
To: GCC Patches <gcc-patches@gcc.gnu.org>
Cc: Jakub Jelinek <jakub@redhat.com>, Kostya Serebryany <kcc@google.com>,
 Dmitry Vyukov <dvyukov@google.com>, Diego Novillo <dnovillo@google.com>,
 Lawrence Crowl <crowl@googlers.com>

Hello,

The hash table type can handle creation and removal of entries with
malloc/free.  This patchlet adds support for using new/delete.  It's
useful for hash table entry types that have constructors (and/or
destructors), to prevent the user from having to type boilerplate code
to initialize them over and over again.  This is used by the patch that
follows this one.

gcc/

	* hash-table.h (struct typed_delete_remove): New type.
	(typed_delete_remove::remove): Implement this using the delete
	operator.

---
gcc/hash-table.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/gcc/hash-table.h b/gcc/hash-table.h
index 206423d..884840c 100644
--- a/gcc/hash-table.h
+++ b/gcc/hash-table.h
@@ -235,6 +235,22 @@ typed_free_remove <Type>::remove (Type *p)
   free (p);
 }
 
+/* Helpful type for removing entries with the delete operator.  */
+
+template <typename Type>
+struct typed_delete_remove
+{
+  static inline void remove (Type *p);
+};
+
+/* Remove with delete.  */
+
+template <typename Type>
+inline void
+typed_delete_remove <Type>::remove (Type *p)
+{
+  delete p;
+}
 
 /* Helpful type for a no-op remove.  */