From c1eb0583c4332fdfd88a2d83c85ad468e94bb7b7 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@musicpd.org>
Date: Thu, 27 Jun 2019 21:22:52 +0200
Subject: [PATCH] output/alsa: add "full" assertion to WriteFromPeriodBuffer()

---
 src/output/plugins/AlsaOutputPlugin.cxx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/output/plugins/AlsaOutputPlugin.cxx b/src/output/plugins/AlsaOutputPlugin.cxx
index b2316e865..cae0d04ac 100644
--- a/src/output/plugins/AlsaOutputPlugin.cxx
+++ b/src/output/plugins/AlsaOutputPlugin.cxx
@@ -312,6 +312,7 @@ private:
 
 	snd_pcm_sframes_t WriteFromPeriodBuffer() noexcept {
 		assert(!period_buffer.IsEmpty());
+		assert(period_buffer.IsFull());
 
 		auto frames_written = snd_pcm_writei(pcm, period_buffer.GetHead(),
 						     period_buffer.GetFrames(out_frame_size));