commit-graph: return with errors during write

diff --git a/builtin/commit.c b/builtin/commit.c
index 2986553d5ffb97f0798e4d4eb921073439fb9a92..b9ea7222fae4d6caf0f7ab6f975179922f5e2293 100644 (file)
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -1669,8 +1669,9 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
                      "new_index file. Check that disk is not full and quota is\n"
                      "not exceeded, and then \"git reset HEAD\" to recover."));
 
-       if (git_env_bool(GIT_TEST_COMMIT_GRAPH, 0))
-               write_commit_graph_reachable(get_object_directory(), 0, 0);
+       if (git_env_bool(GIT_TEST_COMMIT_GRAPH, 0) &&
+           write_commit_graph_reachable(get_object_directory(), 0, 0))
+               return 1;
 
        repo_rerere(the_repository, 0);
        run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);