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-rw-r--r--src/libutil/serialise.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libutil/serialise.cc b/src/libutil/serialise.cc
index 692144b75..a6cc919d2 100644
--- a/src/libutil/serialise.cc
+++ b/src/libutil/serialise.cc
@@ -230,7 +230,7 @@ std::unique_ptr<FinishSink> sourceToSink(std::function<void(Source &)> fun)
if (cur.empty()) {
yield();
if (yield.get()) {
- return (size_t)0;
+ throw EndOfFile("coroutine exhausted");
}
}