dir.c: pass flags to openat(2) correctly

Flags are 3rd argument of openat(2) while the 4th argument
(mode_t) is unnecessary for our uses.  This bug exists since
Ruby 2.5 from r58860 and was discoverd by strace.

* dir.c (nogvl_opendir_at): use openat correctly
  [Feature #13056] [Feature #14346]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61754 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 2 deletions

diff --git a/dir.c b/dir.c
index ecc2eeb8ad..91680d29d7 100644
--- a/dir.c
+++ b/dir.c
@@ -1447,7 +1447,7 @@ nogvl_opendir_at(void *ptr)
 			       O_DIRECTORY|
 #  endif /* O_DIRECTORY */
 			       0);
-    int fd = openat(oaa->basefd, oaa->path, 0, opendir_flags);
+    int fd = openat(oaa->basefd, oaa->path, opendir_flags);
 
     dirp = fd >= 0 ? fdopendir(fd) : 0;
     if (!dirp) {
@@ -1455,7 +1455,7 @@ nogvl_opendir_at(void *ptr)
 
 	switch (gc_for_fd_with_gvl(e)) {
 	  default:
-	    if (fd < 0) fd = openat(oaa->basefd, oaa->path, 0, opendir_flags);
+	    if (fd < 0) fd = openat(oaa->basefd, oaa->path, opendir_flags);
 	    if (fd >= 0) dirp = fdopendir(fd);
 	    if (dirp) return dirp;