From 8066e1d2ee7a5be804d4a4d42d56acea89f4e6e3 Mon Sep 17 00:00:00 2001 From: Robbert van der Helm Date: Thu, 17 Dec 2020 23:43:52 +0100 Subject: [PATCH] Fix writing back vector streams --- src/common/serialization/vst3/base.cpp | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/src/common/serialization/vst3/base.cpp b/src/common/serialization/vst3/base.cpp index 1756b8ac..0ba0ad31 100644 --- a/src/common/serialization/vst3/base.cpp +++ b/src/common/serialization/vst3/base.cpp @@ -229,11 +229,12 @@ tresult VectorStream::write_back(Steinberg::IBStream* stream) const { int32 num_bytes_written; assert(stream->seek(0, kIBSeekSet) == Steinberg::kResultOk); - assert(stream->write(const_cast(buffer.data()), buffer.size(), - &num_bytes_written) == Steinberg::kResultOk); - - assert(num_bytes_written == 0 || - static_cast(num_bytes_written) == buffer.size()); + // When writing zero bytes, some hosts will return `kResultFalse` + if (stream->write(const_cast(buffer.data()), buffer.size(), + &num_bytes_written) == Steinberg::kResultOk) { + assert(num_bytes_written == 0 || + static_cast(num_bytes_written) == buffer.size()); + } return Steinberg::kResultOk; }