add results

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+
+
+
+pulseaudio applications crash under linux-user-x86_64
+
+Running a simple application that uses pulseaudio under qemu-i386 or qemu-x86_64 makes it crash (tested on Debian 8.0):
+
+# apt-get install build-essential qemu-user libpulse-dev pulseaudio
+$ cat > test.c << __EOF
+#include <pulse/simple.h>
+
+int main(void) {
+	pa_simple *s;
+	pa_sample_spec ss;
+	ss.format = PA_SAMPLE_S16NE;
+	ss.channels = 2;
+	ss.rate = 44100;
+	s = pa_simple_new(NULL,               // Use the default server.
+			  "Fooapp",           // Our application's name.
+			  PA_STREAM_PLAYBACK,
+			  NULL,               // Use the default device.
+			  "Music",            // Description of our stream.
+			  &ss,                // Our sample format.
+			  NULL,               // Use default channel map
+			  NULL,               // Use default buffering
+					      // attributes.
+			  NULL                // Ignore error code.
+			);
+
+	int16_t buf[2 * 1000];
+        int i;
+        memset(buf, 0, sizeof buf);
+	for (i = 0; i < 44; i++) {
+		pa_simple_write(s, buf, sizeof buf, NULL);
+	}
+
+	pa_simple_free(s);
+
+	return 0;
+}
+__EOF
+$ gcc test.c -o test -lpulse -lpulse-simple
+$ ./test
+<no output, no error>
+$ qemu-x86_64 ./test
+qemu: uncaught target signal 11 (Segmentation fault) - core dumped
+Segmentation fault
+$
+
+
+I think this is related to the futex system call. In an attempt to debug the problem, I compiled pulseaudio in debug mode and it hit an assertion failure in pa_mutex_unlock.
+
+Thank you for developing QEMU.  :-)
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