gentoo-overlay/dev-libs/libffi/files/libffi-3.2.1-o-tmpfile-eacces.patch

https://bugs.gentoo.org/529044

deploy this workaround until newer versions of the kernel/C library/libsandbox
are rolled out into general circulation

--- a/src/closures.c
+++ b/src/closures.c
@@ -301,7 +301,8 @@ open_temp_exec_file_dir (const char *dir)
 #ifdef O_TMPFILE
   fd = open (dir, flags | O_RDWR | O_EXCL | O_TMPFILE, 0700);
   /* If the running system does not support the O_TMPFILE flag then retry without it. */
-  if (fd != -1 || (errno != EINVAL && errno != EISDIR && errno != EOPNOTSUPP)) {
+  if (fd != -1 || (errno != EINVAL && errno != EISDIR && errno != EOPNOTSUPP &&
+		   errno != EACCES)) {
     return fd;
   } else {
     errno = 0;