MFH: check the return value of getgroups() for -1 (coverity issue #390)

diff --git a/ext/standard/filestat.c b/ext/standard/filestat.c
index 0340f86afced9badc258c9df3e322f0d8ab51e16..cfc364d2f4512859149b151f7e8602df25680e4e 100644 (file)
--- a/ext/standard/filestat.c
+++ b/ext/standard/filestat.c
@@ -821,7 +821,7 @@ PHPAPI void php_stat(const char *filename, php_stat_len filename_length, int typ
                        gid_t *gids;
 
                        groups = getgroups(0, NULL);
-                       if(groups) {
+                       if(groups > 0) {
                                gids=(gid_t *)safe_emalloc(groups, sizeof(gid_t), 0);
                                n=getgroups(groups, gids);
                                for(i=0;i<n;i++){