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-rw-r--r--c/src/exec/libcsupport/src/fpathconf.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/c/src/exec/libcsupport/src/fpathconf.c b/c/src/exec/libcsupport/src/fpathconf.c
index f3fb1162d0..97c392b5af 100644
--- a/c/src/exec/libcsupport/src/fpathconf.c
+++ b/c/src/exec/libcsupport/src/fpathconf.c
@@ -28,6 +28,7 @@ long fpathconf(
rtems_libio_check_fd(fd);
iop = rtems_libio_iop(fd);
+ rtems_libio_check_is_open(iop);
rtems_libio_check_permissions(iop, LIBIO_FLAGS_READ);
/*