From bf97144c06b44ce602947f95bc5114345f76454f Mon Sep 17 00:00:00 2001
From: WyattBlue <wyattblue@auto-editor.com>
Date: Wed, 21 Jan 2026 16:49:40 -0500
Subject: [PATCH] Restore guards (fix 'main' regression)

---
 av/audio/fifo.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/av/audio/fifo.py b/av/audio/fifo.py
index 14673527e..953d24edc 100644
--- a/av/audio/fifo.py
+++ b/av/audio/fifo.py
@@ -192,15 +192,21 @@ def read_many(self, samples: cython.int, partial: cython.bint = False):
     @property
     def format(self):
         """The :class:`.AudioFormat` of this FIFO."""
+        if not self.ptr:
+            raise AttributeError(f"'{__name__}.AudioFifo' object has no attribute 'format'")
         return self.template.format
 
     @property
     def layout(self):
         """The :class:`.AudioLayout` of this FIFO."""
+        if not self.ptr:
+            raise AttributeError(f"'{__name__}.AudioFifo' object has no attribute 'layout'")
         return self.template.layout
 
     @property
     def sample_rate(self):
+        if not self.ptr:
+            raise AttributeError(f"'{__name__}.AudioFifo' object has no attribute 'sample_rate'")
         return self.template.sample_rate
 
     @property