[PATCH 2/3] tag-utils: use the tag_opt_list_t as talloc context, if possible.

[david at tethera.net]

From: David Bremner <bremner at debian.org>

This code is no less correct than the previous version, since it does
not make sense for the array to live longer than the wrapping struct.

By not relying on the context passed into tag_parse_line, we can allow
tag_op_list_t structures to live longer than that context.
---
 notmuch-restore.c |    2 +-
 tag-util.c        |    9 ++++-----
 tag-util.h        |    3 +--
 3 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/notmuch-restore.c b/notmuch-restore.c
index 5a02328..665373f 100644
--- a/notmuch-restore.c
+++ b/notmuch-restore.c
@@ -105,7 +105,7 @@ parse_sup_line (void *ctx, char *line,
 	    tok_len++;
 	}
 
-	if (tag_op_list_append (ctx, tag_ops, tok, FALSE))
+	if (tag_op_list_append (tag_ops, tok, FALSE))
 	    return -1;
     }
 
diff --git a/tag-util.c b/tag-util.c
index eab482f..705b7ba 100644
--- a/tag-util.c
+++ b/tag-util.c
@@ -109,7 +109,7 @@ parse_tag_line (void *ctx, char *line,
 	    goto DONE;
 	}
 
-	if (tag_op_list_append (ctx, tag_ops, tag, remove)) {
+	if (tag_op_list_append (tag_ops, tag, remove)) {
 	    ret = line_error (TAG_PARSE_OUT_OF_MEMORY, line_for_error,
 			      "aborting");
 	    goto DONE;
@@ -294,7 +294,7 @@ tag_op_list_create (void *ctx)
     list->size = TAG_OP_LIST_INITIAL_SIZE;
     list->count = 0;
 
-    list->ops = talloc_array (ctx, tag_operation_t, list->size);
+    list->ops = talloc_array (list, tag_operation_t, list->size);
     if (list->ops == NULL)
 	return NULL;
 
@@ -303,8 +303,7 @@ tag_op_list_create (void *ctx)
 
 
 int
-tag_op_list_append (void *ctx,
-		    tag_op_list_t *list,
+tag_op_list_append (tag_op_list_t *list,
 		    const char *tag,
 		    notmuch_bool_t remove)
 {
@@ -314,7 +313,7 @@ tag_op_list_append (void *ctx,
 
     if (list->count == list->size) {
 	list->size *= 2;
-	list->ops = talloc_realloc (ctx, list->ops, tag_operation_t,
+	list->ops = talloc_realloc (list, list->ops, tag_operation_t,
 				    list->size);
 	if (list->ops == NULL) {
 	    fprintf (stderr, "Out of memory.\n");
diff --git a/tag-util.h b/tag-util.h
index 99b0fa0..c07bfde 100644
--- a/tag-util.h
+++ b/tag-util.h
@@ -87,8 +87,7 @@ tag_op_list_create (void *ctx);
  */
 
 int
-tag_op_list_append (void *ctx,
-		    tag_op_list_t *list,
+tag_op_list_append (tag_op_list_t *list,
 		    const char *tag,
 		    notmuch_bool_t remove);
 
-- 
1.7.10.4