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-rw-r--r--coreutils/test.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/coreutils/test.c b/coreutils/test.c
index bbc802283..c1097c28c 100644
--- a/coreutils/test.c
+++ b/coreutils/test.c
@@ -151,7 +151,7 @@ typedef int arith_t;
static char **t_wp;
static struct t_op const *t_wp_op;
-static gid_t *group_array = NULL;
+static gid_t *group_array;
static int ngroups;
static enum token t_lex(char *s);
@@ -547,8 +547,10 @@ static int test_eaccess(char *path, int mode)
static void initialize_group_array(void)
{
ngroups = getgroups(0, NULL);
- group_array = xrealloc(group_array, ngroups * sizeof(gid_t));
- getgroups(ngroups, group_array);
+ if (ngroups > 0) {
+ group_array = xmalloc(ngroups * sizeof(gid_t));
+ getgroups(ngroups, group_array);
+ }
}
/* Return non-zero if GID is one that we have in our groups list. */