sscanf/strtoul: parse integers robustly

[git.git] / combine-diff.c

diff --git a/combine-diff.c b/combine-diff.c
index 044633d1643a533498d3f5aba86a35a4611f6ca7..3a9b32f6b8882f3adb91e5833c205635657a98b7 100644 (file)
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -92,14 +92,14 @@ struct sline {
 static char *grab_blob(const unsigned char *sha1, unsigned long *size)
 {
        char *blob;
-       char type[20];
+       enum object_type type;
        if (is_null_sha1(sha1)) {
                /* deleted blob */
                *size = 0;
                return xcalloc(1, 1);
        }
-       blob = read_sha1_file(sha1, type, size);
-       if (strcmp(type, blob_type))
+       blob = read_sha1_file(sha1, &type, size);
+       if (type != OBJ_BLOB)
                die("object '%s' is not a blob!", sha1_to_hex(sha1));
        return blob;
 }
@@ -684,7 +684,7 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
                        goto deleted_file;
 
                if (S_ISLNK(st.st_mode)) {
-                       size_t len = st.st_size;
+                       size_t len = xsize_t(st.st_size);
                        result_size = len;
                        result = xmalloc(len + 1);
                        if (result_size != readlink(elem->path, result, len)) {
@@ -697,10 +697,20 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
                }
                else if (0 <= (fd = open(elem->path, O_RDONLY)) &&
                         !fstat(fd, &st)) {
-                       size_t len = st.st_size;
+                       size_t len = xsize_t(st.st_size);
                        size_t sz = 0;
+                       int is_file, i;
 
                        elem->mode = canon_mode(st.st_mode);
+                       /* if symlinks don't work, assume symlink if all parents
+                        * are symlinks
+                        */
+                       is_file = has_symlinks;
+                       for (i = 0; !is_file && i < num_parent; i++)
+                               is_file = !S_ISLNK(elem->parent[i].mode);
+                       if (!is_file)
+                               elem->mode = canon_mode(S_IFLNK);
+
                        result_size = len;
                        result = xmalloc(len + 1);
                        while (sz < len) {