File _service:tar_scm:backport--Improve-support-for-... of Package patch

File _service:tar_scm:backport--Improve-support-for-memory-leak-detection.patch of Package patch

From 312b793db6f549a3d4036b5d0ed2265c451ede15 Mon Sep 17 00:00:00 2001
From: Andreas Gruenbacher <agruen@gnu.org>
Date: Thu, 27 Jun 2019 11:02:02 +0200
Subject: [PATCH] Improve support for memory leak detection

When building with the address sanitizer on, free some more resources before
exiting.  (This is unnecessary when not looking for memory leaks.)
* src/patch.c (init_files_to_delete): Add dispose function for freeing
filenames.

Signed-off-by: Xibo.Wang <wangxb12@chinatelecom.cn>
---
 src/patch.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/patch.c b/src/patch.c
index 99a5904..e57cf19 100644
--- a/src/patch.c
+++ b/src/patch.c
@@ -36,6 +36,10 @@
 #include <minmax.h>
 #include <safe.h>
 
+#ifdef __SANITIZE_ADDRESS__
+# define FREE_BEFORE_EXIT
+#endif
+
 /* procedures */
 
 static FILE *create_output_file (char const *, int);
@@ -1777,10 +1781,20 @@ struct file_to_delete {
 
 static gl_list_t files_to_delete;
 
+#ifdef FREE_BEFORE_EXIT
+void dispose_file_to_delete (const void *elt)
+{
+	free ((void *) elt);
+}
+#else
+#define dispose_file_to_delete NULL
+#endif
+
 static void
 init_files_to_delete (void)
 {
-  files_to_delete = gl_list_create_empty (GL_LINKED_LIST, NULL, NULL, NULL, true);
+  files_to_delete = gl_list_create_empty (GL_LINKED_LIST, NULL, NULL,
+					  dispose_file_to_delete, true);
 }
 
 static void
-- 
1.8.3.1