Index: emulators/virtualbox-ose/Makefile
===================================================================
--- emulators/virtualbox-ose/Makefile	(revision 542062)
+++ emulators/virtualbox-ose/Makefile	(working copy)
@@ -3,7 +3,7 @@
 
 PORTNAME=	virtualbox-ose
 PORTVERSION=	5.2.34
-PORTREVISION=	4
+PORTREVISION=	5
 CATEGORIES=	emulators
 MASTER_SITES=	https://download.oracle.com/virtualbox/${PORTVERSION}/
 DISTFILES=	VirtualBox-${PORTVERSION}${EXTRACT_SUFX} ${GUESTADDITIONS}
Index: emulators/virtualbox-ose/files/patch-src-VBox-Devices-Audio-DrvHostOSSAudio.cpp
===================================================================
--- emulators/virtualbox-ose/files/patch-src-VBox-Devices-Audio-DrvHostOSSAudio.cpp	(nonexistent)
+++ emulators/virtualbox-ose/files/patch-src-VBox-Devices-Audio-DrvHostOSSAudio.cpp	(working copy)
@@ -0,0 +1,32 @@
+--- emulators/virtualbox-ose/work/VirtualBox-5.2.34/src/VBox/Devices/Audio/DrvHostOSSAudio.cpp.orig	2019-10-10 11:09:31.000000000 -0700
++++ emulators/virtualbox-ose/work/VirtualBox-5.2.34/src/VBox/Devices/Audio/DrvHostOSSAudio.cpp	2020-07-11 17:50:06.963665000 -0700
+@@ -248,11 +248,11 @@
+                 break;
+ 
+             default:
+-                rc = VERR_AUDIO_STREAM_COULD_NOT_CREATE;
++                iFormat = -1;
+                 break;
+         }
+ 
+-        if (RT_FAILURE(rc))
++        if (RT_UNLIKELY(iFormat == -1))
+             break;
+ 
+         if (ioctl(hFile, SNDCTL_DSP_SAMPLESIZE, &iFormat))
+@@ -660,6 +660,7 @@
+ 
+                 pCfgAcq->Backend.cfPeriod     = PDMAUDIOSTREAMCFG_B2F(pCfgAcq, ossAcq.cbFragmentSize);
+                 pCfgAcq->Backend.cfBufferSize = pCfgAcq->Backend.cfPeriod * 2; /* Use "double buffering". */
++                pCfgAcq->Backend.cfPreBuf     = pCfgAcq->Backend.cfBufferSize;
+                 /** @todo Pre-buffering required? */
+             }
+         }
+@@ -778,6 +779,7 @@
+ #endif
+             pCfgAcq->Backend.cfPeriod     = PDMAUDIOSTREAMCFG_B2F(pCfgAcq, obtStream.cbFragmentSize);
+             pCfgAcq->Backend.cfBufferSize = pCfgAcq->Backend.cfPeriod * 2; /* Use "double buffering" */
++            pCfgAcq->Backend.cfPreBuf     = pCfgAcq->Backend.cfBufferSize;
+         }
+ 
+     } while (0);

Property changes on: emulators/virtualbox-ose/files/patch-src-VBox-Devices-Audio-DrvHostOSSAudio.cpp
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