From 1eb7e7a8e8349273d8dd0127dcfd1d426075493e Mon Sep 17 00:00:00 2001
From: Ed Hartnett <edwardjameshartnett@gmail.com>
Date: Mon, 25 Feb 2019 06:36:39 -0700
Subject: [PATCH] added comment describing netcdf-4 behavior in data mode dim
 renames with longer names

---
 libhdf5/hdf5dim.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libhdf5/hdf5dim.c b/libhdf5/hdf5dim.c
index 8a146d901..a184f9925 100644
--- a/libhdf5/hdf5dim.c
+++ b/libhdf5/hdf5dim.c
@@ -187,6 +187,11 @@ NC4_inq_dim(int ncid, int dimid, char *name, size_t *lenp)
 /**
  * @internal Rename a dimension, for those who like to prevaricate.
  *
+ * @note If we're not in define mode, new name must be of equal or
+ * less size, if strict nc3 rules are in effect for this file. But we
+ * don't check this because reproducing the exact classic behavior
+ * would be too difficult. See github issue #1340.
+ *
  * @param ncid File and group ID.
  * @param dimid Dimension ID.
  * @param name New dimension name.