[RFA 4/5] Use std::vector in objfiles.c

[Tom Tromey <tom@tromey.com>]

This patch changes a spot in objfiles.c to use a std::vector, removing
a cleanup.

2016-09-22  Tom Tromey  <tom@tromey.com>

	* objfiles.c: Include <vector>.
	(objfile_relocate): Use std::vector.
---
 gdb/ChangeLog  |  5 +++++
 gdb/objfiles.c | 14 +++++++-------
 2 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 670406d..92e79c3 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
 2016-09-22  Tom Tromey  <tom@tromey.com>
 
+	* objfiles.c: Include <vector>.
+	(objfile_relocate): Use std::vector.
+
+2016-09-22  Tom Tromey  <tom@tromey.com>
+
 	* rust-lang.c: Include <string> and <vector>.
 	(rust_evaluate_funcall): Use std::vector, std::string.
 	(rust_evaluate_subexp): Use std::string.
diff --git a/gdb/objfiles.c b/gdb/objfiles.c
index f022d10..bf594a1 100644
--- a/gdb/objfiles.c
+++ b/gdb/objfiles.c
@@ -53,6 +53,8 @@
 #include "gdb_bfd.h"
 #include "btrace.h"
 
+#include <vector>
+
 /* Keep a registry of per-objfile data-pointers required by other GDB
    modules.  */
 
@@ -943,7 +945,7 @@ objfile_relocate (struct objfile *objfile,
        debug_objfile = objfile_separate_debug_iterate (objfile, debug_objfile))
     {
       struct section_addr_info *objfile_addrs;
-      struct section_offsets *new_debug_offsets;
+      std::vector<struct section_offsets> new_debug_offsets;
       struct cleanup *my_cleanups;
 
       objfile_addrs = build_section_addr_info_from_objfile (objfile);
@@ -956,15 +958,13 @@ objfile_relocate (struct objfile *objfile,
 
       gdb_assert (debug_objfile->num_sections
 		  == gdb_bfd_count_sections (debug_objfile->obfd));
-      new_debug_offsets = 
-	((struct section_offsets *)
-	 xmalloc (SIZEOF_N_SECTION_OFFSETS (debug_objfile->num_sections)));
-      make_cleanup (xfree, new_debug_offsets);
-      relative_addr_info_to_section_offsets (new_debug_offsets,
+      new_debug_offsets
+	.reserve (SIZEOF_N_SECTION_OFFSETS (debug_objfile->num_sections));
+      relative_addr_info_to_section_offsets (new_debug_offsets.data (),
 					     debug_objfile->num_sections,
 					     objfile_addrs);
 
-      changed |= objfile_relocate1 (debug_objfile, new_debug_offsets);
+      changed |= objfile_relocate1 (debug_objfile, new_debug_offsets.data ());
 
       do_cleanups (my_cleanups);
     }
-- 
2.7.4