Re: [PATCH v2] t0001: fix broken not-quite getcwd(3) test in bed67874e2

> The problem with that fix is that while its analysis of the problem is
> correct, it doesn't actually call getcwd(3), instead it invokes "pwd
> -P". There is no guarantee that "pwd -P" is going to call getcwd(3),
> as opposed to e.g. being a shell built-in.
>
> On AIX under both bash and ksh this test breaks because "pwd -P" will
> happily display the current working directory, but getcwd(3) called by
> the "git init" we're testing here will fail to get it.

> diff --git a/t/helper/test-tool.c b/t/helper/test-tool.c
> index 490ac026c51..3ce5585e53a 100644
> --- a/t/helper/test-tool.c
> +++ b/t/helper/test-tool.c
> @@ -33,6 +33,7 @@ static struct test_cmd cmds[] = {
>  	{ "fast-rebase", cmd__fast_rebase },
>  	{ "genrandom", cmd__genrandom },
>  	{ "genzeros", cmd__genzeros },
> +	{ "getcwd", cmd__getcwd },
>  	{ "hashmap", cmd__hashmap },
>  	{ "hash-speed", cmd__hash_speed },
>  	{ "index-version", cmd__index_version },
> diff --git a/t/helper/test-tool.h b/t/helper/test-tool.h
> index f8dc266721f..9f0f5228508 100644
> --- a/t/helper/test-tool.h
> +++ b/t/helper/test-tool.h
> @@ -23,6 +23,7 @@ int cmd__example_decorate(int argc, const char **argv);
>  int cmd__fast_rebase(int argc, const char **argv);
>  int cmd__genrandom(int argc, const char **argv);
>  int cmd__genzeros(int argc, const char **argv);
> +int cmd__getcwd(int argc, const char **argv);
>  int cmd__hashmap(int argc, const char **argv);
>  int cmd__hash_speed(int argc, const char **argv);
>  int cmd__index_version(int argc, const char **argv);
> diff --git a/t/t0001-init.sh b/t/t0001-init.sh
> index acd662e403b..df544bb321f 100755
> --- a/t/t0001-init.sh
> +++ b/t/t0001-init.sh
> @@ -356,7 +356,10 @@ test_lazy_prereq GETCWD_IGNORES_PERMS '
>  	chmod 100 $base ||
>  	BUG "cannot prepare $base"
>  
> -	(cd $base/dir && /bin/pwd -P)
> +	(
> +		cd $base/dir &&
> +		test-tool getcwd
> +	)
>  	status=$?
>  
>  	chmod 700 $base &&