pathspec: fix segfault in clear_pathspec

diff --git a/setup.c b/setup.c
index 1b534a750810f3773ba9c21a5ec221f54857349b..f14cbcd3383528566e37cdf76b1fcf517cd31f1e 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -254,7 +254,7 @@ int get_common_dir_noenv(struct strbuf *sb, const char *gitdir)
                if (!is_absolute_path(data.buf))
                        strbuf_addf(&path, "%s/", gitdir);
                strbuf_addbuf(&path, &data);
-               strbuf_addstr(sb, real_path(path.buf));
+               strbuf_add_real_path(sb, path.buf);
                ret = 1;
        } else {
                strbuf_addstr(sb, gitdir);
@@ -486,6 +486,30 @@ int verify_repository_format(const struct repository_format *format,
        return 0;
 }
 
+void read_gitfile_error_die(int error_code, const char *path, const char *dir)
+{
+       switch (error_code) {
+       case READ_GITFILE_ERR_STAT_FAILED:
+       case READ_GITFILE_ERR_NOT_A_FILE:
+               /* non-fatal; follow return path */
+               break;
+       case READ_GITFILE_ERR_OPEN_FAILED:
+               die_errno("Error opening '%s'", path);
+       case READ_GITFILE_ERR_TOO_LARGE:
+               die("Too large to be a .git file: '%s'", path);
+       case READ_GITFILE_ERR_READ_FAILED:
+               die("Error reading %s", path);
+       case READ_GITFILE_ERR_INVALID_FORMAT:
+               die("Invalid gitfile format: %s", path);
+       case READ_GITFILE_ERR_NO_PATH:
+               die("No path in gitfile: %s", path);
+       case READ_GITFILE_ERR_NOT_A_REPO:
+               die("Not a git repository: %s", dir);
+       default:
+               die("BUG: unknown error code");
+       }
+}
+
 /*
  * Try to read the location of the git directory from the .git file,
  * return path to git directory if found.
@@ -559,28 +583,8 @@ const char *read_gitfile_gently(const char *path, int *return_error_code)
 cleanup_return:
        if (return_error_code)
                *return_error_code = error_code;
-       else if (error_code) {
-               switch (error_code) {
-               case READ_GITFILE_ERR_STAT_FAILED:
-               case READ_GITFILE_ERR_NOT_A_FILE:
-                       /* non-fatal; follow return path */
-                       break;
-               case READ_GITFILE_ERR_OPEN_FAILED:
-                       die_errno("Error opening '%s'", path);
-               case READ_GITFILE_ERR_TOO_LARGE:
-                       die("Too large to be a .git file: '%s'", path);
-               case READ_GITFILE_ERR_READ_FAILED:
-                       die("Error reading %s", path);
-               case READ_GITFILE_ERR_INVALID_FORMAT:
-                       die("Invalid gitfile format: %s", path);
-               case READ_GITFILE_ERR_NO_PATH:
-                       die("No path in gitfile: %s", path);
-               case READ_GITFILE_ERR_NOT_A_REPO:
-                       die("Not a git repository: %s", dir);
-               default:
-                       assert(0);
-               }
-       }
+       else if (error_code)
+               read_gitfile_error_die(error_code, path, dir);
 
        free(buf);
        return error_code ? NULL : path;
@@ -1017,11 +1021,11 @@ const char *setup_git_directory(void)
        return setup_git_directory_gently(NULL);
 }
 
-const char *resolve_gitdir(const char *suspect)
+const char *resolve_gitdir_gently(const char *suspect, int *return_error_code)
 {
        if (is_git_directory(suspect))
                return suspect;
-       return read_gitfile(suspect);
+       return read_gitfile_gently(suspect, return_error_code);
 }
 
 /* if any standard file descriptor is missing open it to /dev/null */