[ob/pushed] C++: Initialize a couple const globals

[Pedro Alves]

In C++ mode, we get:

 src/gdb/gdbserver/tdesc.c:43:33: error: uninitialized const ‘default_description’ [-fpermissive]
  static const struct target_desc default_description;
				  ^
 In file included from src/gdb/gdbserver/tdesc.c:19:0:
 src/gdb/gdbserver/tdesc.h:26:8: note: ‘const struct target_desc’ has no user-provided default constructor
  struct target_desc
	 ^

gdb/ChangeLog:
2015-08-21  Pedro Alves  <palves@redhat.com>

	* frame.c (null_frame_id): Explicitly zero-initialize.

gdb/gdbserver/ChangeLog:
2015-08-21  Pedro Alves  <palves@redhat.com>

	* tdesc.c (default_description): Explicitly zero-initialize.
---
 gdb/ChangeLog           | 4 ++++
 gdb/frame.c             | 2 +-
 gdb/gdbserver/ChangeLog | 4 ++++
 gdb/gdbserver/tdesc.c   | 2 +-
 4 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e99ec92..94bb7a5 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2015-08-21  Pedro Alves  <palves@redhat.com>
+
+	* frame.c (null_frame_id): Explicitly zero-initialize.
+
 2015-08-21  Tom Tromey  <tromey@redhat.com>
 
 	* dwarf2read.c (struct dwarf2_section_info): Rename field
diff --git a/gdb/frame.c b/gdb/frame.c
index f05f739..745e007 100644
--- a/gdb/frame.c
+++ b/gdb/frame.c
@@ -503,7 +503,7 @@ frame_unwind_caller_id (struct frame_info *next_frame)
     return null_frame_id;
 }
 
-const struct frame_id null_frame_id; /* All zeros.  */
+const struct frame_id null_frame_id = { 0 }; /* All zeros.  */
 const struct frame_id outer_frame_id = { 0, 0, 0, FID_STACK_INVALID, 0, 1, 0 };
 
 struct frame_id
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index a11461d..6103287 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,5 +1,9 @@
 2015-08-21  Pedro Alves  <palves@redhat.com>
 
+	* tdesc.c (default_description): Explicitly zero-initialize.
+
+2015-08-21  Pedro Alves  <palves@redhat.com>
+
 	PR gdb/18749
 	* inferiors.c (remove_thread): Discard any pending stop reply for
 	this thread.
diff --git a/gdb/gdbserver/tdesc.c b/gdb/gdbserver/tdesc.c
index 8d008fd..1263efe 100644
--- a/gdb/gdbserver/tdesc.c
+++ b/gdb/gdbserver/tdesc.c
@@ -40,7 +40,7 @@ init_target_desc (struct target_desc *tdesc)
 
 #ifndef IN_PROCESS_AGENT
 
-static const struct target_desc default_description;
+static const struct target_desc default_description = { 0 };
 
 void
 copy_target_description (struct target_desc *dest,
-- 
1.9.3