In ASTWriter::WriteDeclContextVisibleBlock, don't write empty lookups.
Empty lookups can occur in the DeclContext map when we are chaining PCHs, where
the empty lookup indicates that we already looked in ExternalASTSource.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138816 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Serialization/ASTWriter.cpp b/lib/Serialization/ASTWriter.cpp
index 0d2a015..0cd2c8c 100644
--- a/lib/Serialization/ASTWriter.cpp
+++ b/lib/Serialization/ASTWriter.cpp
@@ -2628,7 +2628,8 @@
D != DEnd; ++D) {
DeclarationName Name = D->first;
DeclContext::lookup_result Result = D->second.getLookupResult();
- Generator.insert(Name, Result, Trait);
+ if (Result.first != Result.second)
+ Generator.insert(Name, Result, Trait);
}
// Create the on-disk hash table in a buffer.
@@ -2673,7 +2674,8 @@
DeclContext::lookup_result Result = D->second.getLookupResult();
// For any name that appears in this table, the results are complete, i.e.
// they overwrite results from previous PCHs. Merging is always a mess.
- Generator.insert(Name, Result, Trait);
+ if (Result.first != Result.second)
+ Generator.insert(Name, Result, Trait);
}
// Create the on-disk hash table in a buffer.
