diff -ur xine-lib-1.1.20.orig/src/audio_out/audio_alsa_out.c xine-lib-1.1.20/src/audio_out/audio_alsa_out.c
--- xine-lib-1.1.20.orig/src/audio_out/audio_alsa_out.c	2011-10-04 23:42:53.000000000 +0200
+++ xine-lib-1.1.20/src/audio_out/audio_alsa_out.c	2011-11-13 17:54:44.276984269 +0100
@@ -41,6 +41,7 @@
 #ifdef HAVE_ALLOCA_H
 #include <alloca.h>
 #endif
+#include <assert.h>
 
 #define ALSA_PCM_NEW_HW_PARAMS_API
 #define ALSA_PCM_NEW_SW_PARAMS_API