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store-api: fix/clarify capture lifetimes in copyPaths

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This seems to fix a use of stack after return.

Change-Id: If690a6defb9a3225684685132cf78b227e271447
This commit is contained in:
jade 2024-06-15 16:39:14 -07:00
parent 14e390e679
commit cf5df9bc4a
1 changed files with 22 additions and 17 deletions
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39
src/libstore/store-api.cc
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@ -1163,25 +1163,30 @@ std::map<StorePath, StorePath> copyPaths(
ValidPathInfo infoForDst = *info;
infoForDst.path = storePathForDst;
auto source = sinkToSource([&](Sink & sink) {
// We can reasonably assume that the copy will happen whenever we
// read the path, so log something about that at that point
auto srcUri = srcStore.getUri();
auto dstUri = dstStore.getUri();
auto storePathS = srcStore.printStorePath(missingPath);
Activity act(*logger, lvlInfo, actCopyPath,
makeCopyPathMessage(srcUri, dstUri, storePathS),
{storePathS, srcUri, dstUri});
PushActivity pact(act.id);
auto source =
sinkToSource([&srcStore, &dstStore, missingPath = missingPath, info = std::move(info)](Sink & sink) {
// We can reasonably assume that the copy will happen whenever we
// read the path, so log something about that at that point
auto srcUri = srcStore.getUri();
auto dstUri = dstStore.getUri();
auto storePathS = srcStore.printStorePath(missingPath);
Activity act(
*logger,
lvlInfo,
actCopyPath,
makeCopyPathMessage(srcUri, dstUri, storePathS),
{storePathS, srcUri, dstUri}
);
PushActivity pact(act.id);
LambdaSink progressSink([&, total = 0ULL](std::string_view data) mutable {
total += data.size();
act.progress(total, info->narSize);
LambdaSink progressSink([&, total = 0ULL](std::string_view data) mutable {
total += data.size();
act.progress(total, info->narSize);
});
TeeSink tee{sink, progressSink};
srcStore.narFromPath(missingPath, tee);
});
TeeSink tee { sink, progressSink };
srcStore.narFromPath(missingPath, tee);
});
pathsToCopy.push_back(std::pair{infoForDst, std::move(source)});
}