[binutils-gdb] Add a noop deleter

[binutils-gdb] Add a noop deleter

[Tom Tromey]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=31930bd34d15dd22c5ef47b46d8bc95a5ec34d0e

commit 31930bd34d15dd22c5ef47b46d8bc95a5ec34d0e
Author: Tom Tromey <tom@tromey.com>
Date:   Wed May 1 15:28:18 2019 -0600

    Add a noop deleter
    
    This adds a no-op deleter, which is used in subsequent patches.
    
    gdb/ChangeLog
    2019-05-08  Tom Tromey  <tom@tromey.com>
    
    	* common/gdb_unique_ptr.h (struct noop_deleter): New.

Diff:
---
 gdb/ChangeLog               | 4 ++++
 gdb/common/gdb_unique_ptr.h | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index a8d727b..edda8c9 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,9 @@
 2019-05-08  Tom Tromey  <tom@tromey.com>
 
+	* common/gdb_unique_ptr.h (struct noop_deleter): New.
+
+2019-05-08  Tom Tromey  <tom@tromey.com>
+
 	* nto-tdep.c (nto_inferior_data_reg): Change type.
 	(nto_inferior_data): Update.
 	(nto_inferior_data_cleanup, nto_new_inferior_data)
diff --git a/gdb/common/gdb_unique_ptr.h b/gdb/common/gdb_unique_ptr.h
index 327e127..a4be2bb 100644
--- a/gdb/common/gdb_unique_ptr.h
+++ b/gdb/common/gdb_unique_ptr.h
@@ -47,6 +47,13 @@ struct xfree_deleter<T[]>
 template<typename T> using unique_xmalloc_ptr
   = std::unique_ptr<T, xfree_deleter<T>>;
 
+/* A no-op deleter.  */
+template<typename T>
+struct noop_deleter
+{
+  void operator() (T *ptr) const { }
+};
+
 } /* namespace gdb */
 
 #endif /* COMMON_GDB_UNIQUE_PTR_H */