[PATCH] Convert target_structs vector to VEC

[Simon Marchi <simon dot marchi at ericsson dot com>]

I thought that this home made implementation of a vector could be
replaced by the more standard VEC. The implementation seems to predate
the introduction of vec.h, so that would explain why it exists.

Ran make check before and after, no new failures.

gdb/ChangeLog:

2014-08-15  Simon Marchi  <simon.marchi@ericsson.com>

	* target.c (target_struct_size): Remove.
	(target_struct_allocsize): Remove.
	(DEFAULT_ALLOCSIZE): Remove.
	(target_ops_p): New typedef.
	(DEF_VEC_P (target_ops_p)): New vector type.
	(target_structs): Change type to VEC (target_ops_p).
	(add_target_with_completer): Replace "push" code by VEC_safe_push.
	(find_default_run_target): Rewrite for loop following changes to
	target_structs.
---
 gdb/target.c | 36 ++++++++++--------------------------
 1 file changed, 10 insertions(+), 26 deletions(-)

diff --git a/gdb/target.c b/gdb/target.c
index ba244bc..8bf6031 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -117,13 +117,10 @@ static void init_dummy_target (void);
 
 static void update_current_target (void);
 
-/* Pointer to array of target architecture structures; the size of the
-   array; the current index into the array; the allocated size of the
-   array.  */
-struct target_ops **target_structs;
-unsigned target_struct_size;
-unsigned target_struct_allocsize;
-#define	DEFAULT_ALLOCSIZE	10
+/* Vector of existing target structures. */
+typedef struct target_ops *target_ops_p;
+DEF_VEC_P (target_ops_p);
+static VEC (target_ops_p) *target_structs;
 
 /* The initial current target, so that there is always a semi-valid
    current target.  */
@@ -379,20 +376,7 @@ add_target_with_completer (struct target_ops *t,
 
   complete_target_initialization (t);
 
-  if (!target_structs)
-    {
-      target_struct_allocsize = DEFAULT_ALLOCSIZE;
-      target_structs = (struct target_ops **) xmalloc
-	(target_struct_allocsize * sizeof (*target_structs));
-    }
-  if (target_struct_size >= target_struct_allocsize)
-    {
-      target_struct_allocsize *= 2;
-      target_structs = (struct target_ops **)
-	xrealloc ((char *) target_structs,
-		  target_struct_allocsize * sizeof (*target_structs));
-    }
-  target_structs[target_struct_size++] = t;
+  VEC_safe_push (target_ops_p, target_structs, t);
 
   if (targetlist == NULL)
     add_prefix_cmd ("target", class_run, target_command, _("\
@@ -2363,15 +2347,15 @@ find_default_run_target (char *do_mesg)
 
   if (auto_connect_native_target)
     {
-      struct target_ops **t;
+      struct target_ops *t;
       int count = 0;
+      int i;
 
-      for (t = target_structs; t < target_structs + target_struct_size;
-	   ++t)
+      for (i = 0; VEC_iterate (target_ops_p, target_structs, i, t); ++i)
 	{
-	  if ((*t)->to_can_run != delegate_can_run && target_can_run (*t))
+	  if (t->to_can_run != delegate_can_run && target_can_run (t))
 	    {
-	      runable = *t;
+	      runable = t;
 	      ++count;
 	    }
 	}
-- 
2.0.0