Removing warnings in portaudio source/sink.

[debian/gnuradio] / gr-audio-portaudio / src / audio_portaudio_sink.cc

diff --git a/gr-audio-portaudio/src/audio_portaudio_sink.cc b/gr-audio-portaudio/src/audio_portaudio_sink.cc
index 9a3baf40ef8b48997a48de4a28505b1a66b9a709..64e64ccf4536a3fdcb8b649ba0557234b41dd9e9 100644 (file)
--- a/gr-audio-portaudio/src/audio_portaudio_sink.cc
+++ b/gr-audio-portaudio/src/audio_portaudio_sink.cc
@@ -102,7 +102,10 @@ portaudio_sink_callback (const void *inputBuffer,
 
   else {                       // underrun
     self->d_nunderuns++;
-    ::write(2, "aU", 2);       // FIXME change to non-blocking call
+    ssize_t r = ::write(2, "aU", 2);   // FIXME change to non-blocking call
+    if(r == -1) {
+      perror("audio_portaudio_source::portaudio_source_callback write error to stderr.");
+    }
 
     // FIXME we should transfer what we've got and pad the rest
     memset(outputBuffer, 0, nreqd_samples * sizeof(sample_t));