Ignore -Waddress for alsaaudio.c
/usr/include/alsa/pcm.h contains:
#define snd_pcm_sw_params_alloca(ptr) do { assert(ptr); *ptr = (snd_pcm_sw_params_t *) alloca(snd_pcm_sw_params_sizeof()); memset(*ptr, 0, snd_pcm_sw_params_sizeof()); } while (0)
The assert generates: "error: the address of 'sw_params' will always
evaluate as 'true'" which combined with -Werror prevents alsaaudio.o
from being built with certain versions of GCC.
diff --git a/audio/alsaaudio.c b/audio/alsaaudio.c
index f1d573a..d0b7cd0 100644
--- a/audio/alsaaudio.c
+++ b/audio/alsaaudio.c
@@ -25,6 +25,10 @@
#include "qemu-common.h"
#include "audio.h"
+#if QEMU_GNUC_PREREQ(4, 3)
+#pragma GCC diagnostic ignored "-Waddress"
+#endif
+
#define AUDIO_CAP "alsa"
#include "audio_int.h"
