Add corner case tests for diff-index and diff-files

diff --git a/builtin-init-db.c b/builtin-init-db.c
index e1393b8d1e74c03ff2b45ec93e268daa2e286fd8..2854868b4e4185d33024b9fe5d00ad631c18bb36 100644 (file)
--- a/builtin-init-db.c
+++ b/builtin-init-db.c
@@ -29,27 +29,6 @@ static void safe_create_dir(const char *dir, int share)
                die("Could not make %s writable by group\n", dir);
 }
 
-static int copy_file(const char *dst, const char *src, int mode)
-{
-       int fdi, fdo, status;
-
-       mode = (mode & 0111) ? 0777 : 0666;
-       if ((fdi = open(src, O_RDONLY)) < 0)
-               return fdi;
-       if ((fdo = open(dst, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0) {
-               close(fdi);
-               return fdo;
-       }
-       status = copy_fd(fdi, fdo);
-       if (close(fdo) != 0)
-               return error("%s: write error: %s", dst, strerror(errno));
-
-       if (!status && adjust_shared_perm(dst))
-               return -1;
-
-       return status;
-}
-
 static void copy_templates_1(char *path, int baselen,
                             char *template, int template_baselen,
                             DIR *dir)
@@ -141,9 +120,9 @@ static void copy_templates(const char *git_dir, int len, const char *template_di
                 */
                template_dir = DEFAULT_GIT_TEMPLATE_DIR;
                if (!is_absolute_path(template_dir)) {
-                       const char *exec_path = git_exec_path();
-                       template_dir = prefix_path(exec_path, strlen(exec_path),
-                                                  template_dir);
+                       struct strbuf d = STRBUF_INIT;
+                       strbuf_addf(&d, "%s/%s", git_exec_path(), template_dir);
+                       template_dir = strbuf_detach(&d, NULL);
                }
        }
        strcpy(template_path, template_dir);
@@ -188,9 +167,9 @@ static int create_default_files(const char *git_dir, const char *template_path)
 {
        unsigned len = strlen(git_dir);
        static char path[PATH_MAX];
-       unsigned char sha1[20];
        struct stat st1;
        char repo_version_string[10];
+       char junk[2];
        int reinit;
        int filemode;
 
@@ -240,7 +219,8 @@ static int create_default_files(const char *git_dir, const char *template_path)
         * branch, if it does not exist yet.
         */
        strcpy(path + len, "HEAD");
-       reinit = !read_ref("HEAD", sha1);
+       reinit = (!access(path, R_OK)
+                 || readlink(path, junk, sizeof(junk)-1) != -1);
        if (!reinit) {
                if (create_symref("HEAD", "refs/heads/master", NULL) < 0)
                        exit(1);