test-stat: don't allocate PATH_MAX bytes

POSIX allows systems (like Hurd) that don't define PATH_MAX, or
which define it larger than a reasonable stack allocation should
be.  The test originally used stack allocation to avoid portability
problems with getcwd, but the getcwd-lgpl module solves those.

* tests/test-stat.h (test_stat_func): Don't stack-allocate a
PATH_MAX-sized buffer.
* modules/openat-tests (Depends-on): Add getcwd-lgpl, drop pathmax.
* modules/stat-tests (Depends-on): Likewise.
* tests/test-fstatat.c (includes): Drop pathmax.h.
* tests/test-stat.c (includes): Likewise.
Reported by Bruno Haible.

Signed-off-by: Eric Blake <eblake@redhat.com>

3 files changed, 2 insertions, 4 deletions

diff --git a/tests/test-fstatat.c b/tests/test-fstatat.c
index dda0cd2241..aef1136552 100644
--- a/tests/test-fstatat.c
+++ b/tests/test-fstatat.c
@@ -31,7 +31,6 @@ SIGNATURE_CHECK (fstatat, int, (int, char const *, struct stat *, int));
 #include <unistd.h>
 
 #include "openat.h"
-#include "pathmax.h"
 #include "progname.h"
 #include "same-inode.h"
 #include "ignore-value.h"
diff --git a/tests/test-stat.c b/tests/test-stat.c
index 4cda08908b..cd74491f05 100644
--- a/tests/test-stat.c
+++ b/tests/test-stat.c
@@ -33,7 +33,6 @@ SIGNATURE_CHECK (stat, int, (char const *, struct stat *));
 #include <stdio.h>
 #include <unistd.h>
 
-#include "pathmax.h"
 #include "same-inode.h"
 #include "macros.h"
 
diff --git a/tests/test-stat.h b/tests/test-stat.h
index 22552dce03..3c8f7add0f 100644
--- a/tests/test-stat.h
+++ b/tests/test-stat.h
@@ -27,9 +27,9 @@ test_stat_func (int (*func) (char const *, struct stat *), bool print)
 {
   struct stat st1;
   struct stat st2;
-  char cwd[PATH_MAX];
+  char *cwd = getcwd (NULL, 0);
 
-  ASSERT (getcwd (cwd, PATH_MAX) == cwd);
+  ASSERT (cwd);
   ASSERT (func (".", &st1) == 0);
   ASSERT (func ("./", &st2) == 0);
   ASSERT (SAME_INODE (st1, st2));