t0021: make debug log file name configurable

diff --git a/environment.c b/environment.c
index a9bf5658ade92436feb96f68f174a484fd09fd32..aa478e71de9d9c233593de050d6823e96be77b88 100644 (file)
--- a/environment.c
+++ b/environment.c
@@ -167,8 +167,11 @@ static void setup_git_env(void)
        const char *replace_ref_base;
 
        git_dir = getenv(GIT_DIR_ENVIRONMENT);
-       if (!git_dir)
+       if (!git_dir) {
+               if (!startup_info->have_repository)
+                       BUG("setup_git_env called without repository");
                git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
+       }
        gitfile = read_gitfile(git_dir);
        git_dir = xstrdup(gitfile ? gitfile : git_dir);
        if (get_common_dir(&sb, git_dir))
@@ -214,6 +217,8 @@ const char *get_git_dir(void)
 
 const char *get_git_common_dir(void)
 {
+       if (!git_dir)
+               setup_git_env();
        return git_common_dir;
 }