Support tentative definitions in precompiled headers. This isn't likely
to happen (ever), but at least we'll do the right thing when it does.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69829 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHWriter.cpp b/lib/Frontend/PCHWriter.cpp
index b081a28..097ced2 100644
--- a/lib/Frontend/PCHWriter.cpp
+++ b/lib/Frontend/PCHWriter.cpp
@@ -2024,6 +2024,15 @@
getIdentifierRef(&Table.get(BuiltinNames[I]));
}
+ // Build a record containing all of the tentative definitions in
+ // this header file. Generally, this record will be empty.
+ RecordData TentativeDefinitions;
+ for (llvm::DenseMap<DeclarationName, VarDecl *>::iterator
+ TD = SemaRef.TentativeDefinitions.begin(),
+ TDEnd = SemaRef.TentativeDefinitions.end();
+ TD != TDEnd; ++TD)
+ AddDeclRef(TD->second, TentativeDefinitions);
+
// Write the remaining PCH contents.
RecordData Record;
Stream.EnterSubblock(pch::PCH_BLOCK_ID, 3);
@@ -2042,8 +2051,13 @@
AddTypeRef(Context.getBuiltinVaListType(), Record);
Stream.EmitRecord(pch::SPECIAL_TYPES, Record);
+ // Write the record containing external, unnamed definitions.
if (!ExternalDefinitions.empty())
Stream.EmitRecord(pch::EXTERNAL_DEFINITIONS, ExternalDefinitions);
+
+ // Write the record containing tentative definitions.
+ if (!TentativeDefinitions.empty())
+ Stream.EmitRecord(pch::TENTATIVE_DEFINITIONS, TentativeDefinitions);
// Some simple statistics
Record.clear();