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fix(tvix): Use mutable field for assigning proto fields

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This was accidentally using the proto arena API to assign the derivation
field of a BuildDerivationRequest. We *thought* this was causing a
double free, but even with this change that's still happening. That
said, this change is probably still a good idea since it's using the
proto API as intended.

References: b/64
Change-Id: I950a4eafb214e9113639ea54d2dfd4659b7be931
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2104
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
This commit is contained in:
Griffin Smith 2020-11-17 18:08:19 -05:00 committed by glittershark
parent e1067b1497
commit 20e206a3f6
1 changed files with 2 additions and 2 deletions
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4
third_party/nix/src/libstore/rpc-store.cc vendored
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@ -381,8 +381,8 @@ BuildResult RpcStore::buildDerivation(const Path& drvPath,
ClientContext ctx;
proto::BuildDerivationRequest request;
request.mutable_drv_path()->set_path(drvPath);
auto proto_drv = drv.to_proto();
request.set_allocated_derivation(&proto_drv);
proto::Derivation proto_drv = drv.to_proto();
*request.mutable_derivation() = proto_drv;
request.set_build_mode(BuildModeToProto(buildMode));
// Same note as in ::buildPaths ...