> diff --git a/t/helper/test-repository.c b/t/helper/test-repository.c
> new file mode 100644
> index 0000000000..5fff540a26
> --- /dev/null
> +++ b/t/helper/test-repository.c
> @@ -0,0 +1,88 @@
> +#include "test-tool.h"
> +#include "cache.h"
> +#include "commit-graph.h"
> +#include "commit.h"
> +#include "config.h"
> +#include "object-store.h"
> +#include "object.h"
> +#include "repository.h"
> +#include "tree.h"
> +
> +static void test_parse_commit_in_graph(const char *gitdir, const char
> *worktree,
> + const struct object_id *commit_oid)
> +{
> + struct repository r;
> + struct commit *c;
> + struct commit_list *parent;
> +
> + /*
> + * Create a commit independent of any repository.
> + */
> + c = lookup_commit(commit_oid);
> +
> + repo_init(&r, gitdir, worktree);
> +
> + if (!parse_commit_in_graph(&r, c))
> + die("Couldn't parse commit");
> +
> + printf("%lu", c->date);
32-bit builds complain about this:
t/helper/test-repository.c: In function 'test_parse_commit_in_graph':
t/helper/test-repository.c:28:9: error: format '%lu' expects argument of type
'long unsigned int', but argument 2 has type 'timestamp_t {aka long long
unsigned int}' [-Werror=format=]
printf("%lu", c->date);
^
cc1: all warnings being treated as errors
Makefile:2262: recipe for target 't/helper/test-repository.o' failed
make: *** [t/helper/test-repository.o] Error 1
> + for (parent = c->parents; parent; parent = parent->next)
> + printf(" %s", oid_to_hex(&parent->item->object.oid));
> + printf("\n");
> +
> + repo_clear(&r);
> +}
