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Deterministic protoc --descriptor_set_out #7175

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merged 2 commits into from Feb 12, 2020
Merged

Deterministic protoc --descriptor_set_out #7175

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31f471b
Made protoc --descriptor_set_out deterministic.
mpartel Feb 5, 2020
62269f4
Destruct CodedOutputStream instead of using Trim()
mpartel Feb 12, 2020
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18 changes: 13 additions & 5 deletions src/google/protobuf/compiler/command_line_interface.cc
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Expand Up @@ -2228,12 +2228,20 @@ bool CommandLineInterface::WriteDescriptorSet(
}

io::FileOutputStream out(fd);
if (!file_set.SerializeToZeroCopyStream(&out)) {
std::cerr << descriptor_set_out_name_ << ": " << strerror(out.GetErrno())
<< std::endl;
out.Close();
return false;

{
io::CodedOutputStream coded_out(&out);
// Determinism is useful here because build outputs are sometimes checked
// into version control.
coded_out.SetSerializationDeterministic(true);
if (!file_set.SerializeToCodedStream(&coded_out)) {
std::cerr << descriptor_set_out_name_ << ": " << strerror(out.GetErrno())
<< std::endl;
out.Close();
return false;
}
}

if (!out.Close()) {
std::cerr << descriptor_set_out_name_ << ": " << strerror(out.GetErrno())
<< std::endl;
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