compat: Add simplified merge sort implementation from glibc

diff --git a/builtin-blame.c b/builtin-blame.c
index eda79d0f00f5696f6436b67390bf84f8b2f7cb9c..9b4c02e87f7ef4a20d269ab9315b6977cf7fb3fb 100644 (file)
--- a/builtin-blame.c
+++ b/builtin-blame.c
@@ -125,7 +125,6 @@ static void origin_decref(struct origin *o)
        if (o && --o->refcnt <= 0) {
                if (o->file.ptr)
                        free(o->file.ptr);
-               memset(o, 0, sizeof(*o));
                free(o);
        }
 }
@@ -388,6 +387,7 @@ static struct origin *find_origin(struct scoreboard *sb,
                }
        }
        diff_flush(&diff_opts);
+       diff_tree_release_paths(&diff_opts);
        if (porigin) {
                /*
                 * Create a freestanding copy that is not part of
@@ -444,6 +444,7 @@ static struct origin *find_rename(struct scoreboard *sb,
                }
        }
        diff_flush(&diff_opts);
+       diff_tree_release_paths(&diff_opts);
        return porigin;
 }
 
@@ -540,7 +541,7 @@ static struct patch *compare_buffer(mmfile_t *file_p, mmfile_t *file_o,
        state.ret->chunks = NULL;
        state.ret->num = 0;
 
-       xdl_diff(file_p, file_o, &xpp, &xecfg, &ecb);
+       xdi_diff(file_p, file_o, &xpp, &xecfg, &ecb);
 
        if (state.ret->num) {
                struct chunk *chunk;
@@ -605,7 +606,7 @@ static void add_blame_entry(struct scoreboard *sb, struct blame_entry *e)
 
 /*
  * src typically is on-stack; we want to copy the information in it to
- * an malloced blame_entry that is already on the linked list of the
+ * a malloced blame_entry that is already on the linked list of the
  * scoreboard.  The origin of dst loses a refcnt while the origin of src
  * gains one.
  */
@@ -1165,7 +1166,7 @@ static int find_copy_in_parent(struct scoreboard *sb,
                }
        }
        diff_flush(&diff_opts);
-
+       diff_tree_release_paths(&diff_opts);
        return retval;
 }