#include "graph.h"
 #include "userdiff.h"
 #include "line-log.h"
+#include "argv-array.h"
 
 static void range_set_grow(struct range_set *rs, size_t extra)
 {
        if (diff_populate_filespec(spec, 0))
                die("Cannot read blob %s", sha1_to_hex(spec->sha1));
 
-       ends = xmalloc(size * sizeof(*ends));
+       ALLOC_ARRAY(ends, size);
        ends[cur++] = 0;
        data = spec->data;
        while (num < spec->size) {
        add_line_range(rev, commit, range);
 
        if (!rev->diffopt.detect_rename) {
-               int i, count = 0;
-               struct line_log_data *r = range;
+               struct line_log_data *r;
+               struct argv_array array = ARGV_ARRAY_INIT;
                const char **paths;
-               while (r) {
-                       count++;
-                       r = r->next;
-               }
-               paths = xmalloc((count+1)*sizeof(char *));
-               r = range;
-               for (i = 0; i < count; i++) {
-                       paths[i] = xstrdup(r->path);
-                       r = r->next;
-               }
-               paths[count] = NULL;
+
+               for (r = range; r; r = r->next)
+                       argv_array_push(&array, r->path);
+               paths = argv_array_detach(&array);
+
                parse_pathspec(&rev->diffopt.pathspec, 0,
                               PATHSPEC_PREFER_FULL, "", paths);
+               /* strings are now owned by pathspec */
                free(paths);
        }
 }
        if (nparents > 1 && rev->first_parent_only)
                nparents = 1;
 
-       diffqueues = xmalloc(nparents * sizeof(*diffqueues));
-       cand = xmalloc(nparents * sizeof(*cand));
-       parents = xmalloc(nparents * sizeof(*parents));
+       ALLOC_ARRAY(diffqueues, nparents);
+       ALLOC_ARRAY(cand, nparents);
+       ALLOC_ARRAY(parents, nparents);
 
        p = commit->parents;
        for (i = 0; i < nparents; i++) {