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-rw-r--r--clang-tools-extra/clangd/index/Merge.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/clang-tools-extra/clangd/index/Merge.h b/clang-tools-extra/clangd/index/Merge.h
index 281ae01710c..38a6887040c 100644
--- a/clang-tools-extra/clangd/index/Merge.h
+++ b/clang-tools-extra/clangd/index/Merge.h
@@ -24,6 +24,10 @@ Symbol mergeSymbol(const Symbol &L, const Symbol &R);
// - the Dynamic index covers few files, but is relatively up-to-date.
// - the Static index covers a bigger set of files, but is relatively stale.
// The returned index attempts to combine results, and avoid duplicates.
+//
+// FIXME: We don't have a mechanism in Index to track deleted symbols and
+// occurrences in dirty files, so the merged index may return stale symbols
+// and occurrences from Static index.
std::unique_ptr<SymbolIndex> mergeIndex(const SymbolIndex *Dynamic,
const SymbolIndex *Static);
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