notmuch search: Clean up some memory leaks during search loop.

With talloc, we were already freeing all memory by the time we exited
the loop, but that didn't help with excess use of memory inside the
loop, (which was mostly from tallocing some objects with the incorrect
parent).

Thanks to Andrew Tridgell for sitting next to me and teaching me to
use talloc_report_full to find these leaks.

3 files changed, 17 insertions, 16 deletions

diff --git a/lib/thread.cc b/lib/thread.cc
index b29f2c92..5190a663 100644
--- a/lib/thread.cc
+++ b/lib/thread.cc
@@ -397,7 +397,7 @@ _notmuch_thread_create (void *ctx,
     notmuch_thread_t *thread;
     notmuch_message_t *seed_message;
     const char *thread_id;
-    const char *thread_id_query_string;
+    char *thread_id_query_string;
     notmuch_query_t *thread_id_query;
 
     notmuch_messages_t *messages;
@@ -416,6 +416,8 @@ _notmuch_thread_create (void *ctx,
     if (unlikely (thread_id_query == NULL))
 	return NULL;
 
+    talloc_free (thread_id_query_string);
+
     thread = talloc (ctx, notmuch_thread_t);
     if (unlikely (thread == NULL))
 	return NULL;
diff --git a/notmuch-search.c b/notmuch-search.c
index c628b369..a91b2311 100644
--- a/notmuch-search.c
+++ b/notmuch-search.c
@@ -167,8 +167,7 @@ format_thread_json (const void *ctx,
 }
 
 static int
-do_search_threads (const void *ctx,
-		   const search_format_t *format,
+do_search_threads (const search_format_t *format,
 		   notmuch_query_t *query,
 		   notmuch_sort_t sort,
 		   output_t output)
@@ -197,7 +196,7 @@ do_search_threads (const void *ctx,
 	thread = notmuch_threads_get (threads);
 
 	if (output == OUTPUT_THREADS) {
-	    format->item_id (ctx, "thread:",
+	    format->item_id (thread, "thread:",
 			     notmuch_thread_get_thread_id (thread));
 	} else { /* output == OUTPUT_SUMMARY */
 	    fputs (format->item_start, stdout);
@@ -207,7 +206,7 @@ do_search_threads (const void *ctx,
 	    else
 		date = notmuch_thread_get_newest_date (thread);
 
-	    format->thread_summary (ctx,
+	    format->thread_summary (thread,
 				    notmuch_thread_get_thread_id (thread),
 				    date,
 				    notmuch_thread_get_matched_messages (thread),
@@ -244,8 +243,7 @@ do_search_threads (const void *ctx,
 }
 
 static int
-do_search_messages (const void *ctx,
-		    const search_format_t *format,
+do_search_messages (const search_format_t *format,
 		    notmuch_query_t *query,
 		    output_t output)
 {
@@ -269,10 +267,10 @@ do_search_messages (const void *ctx,
 	    fputs (format->item_sep, stdout);
 
 	if (output == OUTPUT_FILES) {
-	    format->item_id (ctx, "",
+	    format->item_id (message, "",
 			     notmuch_message_get_filename (message));
 	} else { /* output == OUTPUT_MESSAGES */
-	    format->item_id (ctx, "id:",
+	    format->item_id (message, "id:",
 			     notmuch_message_get_message_id (message));
 	}
 
@@ -290,8 +288,7 @@ do_search_messages (const void *ctx,
 }
 
 static int
-do_search_tags (const void *ctx,
-		notmuch_database_t *notmuch,
+do_search_tags (notmuch_database_t *notmuch,
 		const search_format_t *format,
 		notmuch_query_t *query)
 {
@@ -324,7 +321,7 @@ do_search_tags (const void *ctx,
 	else
 	    fputs (format->item_sep, stdout);
 
-	format->item_id (ctx, "", tag);
+	format->item_id (tags, "", tag);
 
 	first_tag = 0;
     }
@@ -412,7 +409,7 @@ notmuch_search_command (void *ctx, int argc, char *argv[])
     if (notmuch == NULL)
 	return 1;
 
-    query_str = query_string_from_args (ctx, argc, argv);
+    query_str = query_string_from_args (notmuch, argc, argv);
     if (query_str == NULL) {
 	fprintf (stderr, "Out of memory.\n");
 	return 1;
@@ -434,14 +431,14 @@ notmuch_search_command (void *ctx, int argc, char *argv[])
     default:
     case OUTPUT_SUMMARY:
     case OUTPUT_THREADS:
-	ret = do_search_threads (ctx, format, query, sort, output);
+	ret = do_search_threads (format, query, sort, output);
 	break;
     case OUTPUT_MESSAGES:
     case OUTPUT_FILES:
-	ret = do_search_messages (ctx, format, query, output);
+	ret = do_search_messages (format, query, output);
 	break;
     case OUTPUT_TAGS:
-	ret = do_search_tags (ctx, notmuch, format, query);
+	ret = do_search_tags (notmuch, format, query);
 	break;
     }
 
diff --git a/notmuch.c b/notmuch.c
index c028aeb9..40da62b6 100644
--- a/notmuch.c
+++ b/notmuch.c
@@ -548,6 +548,8 @@ main (int argc, char *argv[])
     command_t *command;
     unsigned int i;
 
+    talloc_enable_null_tracking ();
+
     local = talloc_new (NULL);
 
     g_mime_init (0);