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RemoteStore::addToStore(): Fix race between stderrThread and NAR writer

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As pointed out by @B4dM4n, the call to to.flush() on stderrThread is
unsafe because the NAR writer thread is also writing to 'to'.

Fixes #3943.
This commit is contained in:
Eelco Dolstra 2020-08-27 14:48:08 +02:00
parent 3ccf3801fb
commit a0f19d9f3a
3 changed files with 13 additions and 8 deletions
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2
src/libstore/remote-store.hh
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@ -114,7 +114,7 @@ protected:
virtual ~Connection();
std::exception_ptr processStderr(Sink * sink = 0, Source * source = 0);
std::exception_ptr processStderr(Sink * sink = 0, Source * source = 0, bool flush = true);
};
ref<Connection> openConnectionWrapper();