From 830590247bcea2faf7863f73220175e386891c61 Mon Sep 17 00:00:00 2001
From: BusinessmanProgrammerSteve
 <BusinessmanProgrammerSteve@47890b92-0858-11df-a26f-8b716316a5bc>
Date: Sun, 7 Nov 2010 01:16:13 +0000
Subject: [PATCH] Fix for bug 251 (crash with PulseAudio and Overdub
 recording). This was suggested by Ross Bencina on the PortAudio mailing list,
 so I imagine it will be checked into PortAudio soon as well.

---
 lib-src/portaudio-v19/src/common/pa_process.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib-src/portaudio-v19/src/common/pa_process.c b/lib-src/portaudio-v19/src/common/pa_process.c
index e176670aa..2c7e5eb61 100644
--- a/lib-src/portaudio-v19/src/common/pa_process.c
+++ b/lib-src/portaudio-v19/src/common/pa_process.c
@@ -764,7 +764,7 @@ static unsigned long NonAdaptingProcess( PaUtilBufferProcessor *bp,
                     destChannelStrideBytes = bp->bytesPerUserInputSample;
 
                     /* process host buffer directly, or use temp buffer if formats differ or host buffer non-interleaved */
-                    if( bp->userInputSampleFormatIsEqualToHost && bp->hostInputIsInterleaved )
+                    if( bp->userInputSampleFormatIsEqualToHost && bp->hostInputIsInterleaved && bp->hostInputChannels[0][0].data)
                     {
                         userInput = hostInputChannels[0].data;
                         destBytePtr = (unsigned char *)hostInputChannels[0].data;
@@ -781,7 +781,7 @@ static unsigned long NonAdaptingProcess( PaUtilBufferProcessor *bp,
                     destChannelStrideBytes = frameCount * bp->bytesPerUserInputSample;
 
                     /* setup non-interleaved ptrs */
-                    if( bp->userInputSampleFormatIsEqualToHost && !bp->hostInputIsInterleaved )
+                    if( bp->userInputSampleFormatIsEqualToHost && !bp->hostInputIsInterleaved && bp->hostInputChannels[0][0].data )
                     {
                         for( i=0; i<bp->inputChannelCount; ++i )
                         {