diff options
Diffstat (limited to 'io.c')
-rw-r--r-- | io.c | 1 |
1 files changed, 1 insertions, 0 deletions
@@ -3851,6 +3851,7 @@ rb_io_initialize(argc, argv, io) else if (!ofp) { #if defined(HAVE_FCNTL) && defined(F_GETFL) flags = fcntl(fd, F_GETFL); + if (flags == -1) rb_sys_fail(0); #else flags = O_RDONLY; #endif |