From 04974c5afeed044eb9fba399e65d341c7e14fdef Mon Sep 17 00:00:00 2001
From: Jim Pivarski <jpivarski@users.noreply.github.com>
Date: Thu, 26 Oct 2023 08:47:13 -0500
Subject: [PATCH] fix: protect RecordForm against len(fields) != len(contents)
 (#2776)

Noticed this while @ioanaif was debugging an issue in Uproot.

No time pressure; just thought I'd fix it while we see it.

If you approve, @agoose77, go ahead and merge it.
---
 src/awkward/forms/recordform.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/awkward/forms/recordform.py b/src/awkward/forms/recordform.py
index ec6cec59cb..26f0f1bc98 100644
--- a/src/awkward/forms/recordform.py
+++ b/src/awkward/forms/recordform.py
@@ -48,6 +48,8 @@ def __init__(
 
         self._fields = None if fields is None else list(fields)
         self._contents = list(contents)
+        if fields is not None:
+            assert len(self._fields) == len(self._contents)
         self._init(parameters=parameters, form_key=form_key)
 
     @property