[modules] Don't defer performing updates if we have incomplete redecl chains.

Instead, perform them carefully immediately.

llvm-svn: 215147

1 files changed, 1 insertions, 4 deletions

diff --git a/clang/lib/Serialization/ASTReader.cpp b/clang/lib/Serialization/ASTReader.cpp
index 4847678d25f..4733c6bdeb0 100644
--- a/clang/lib/Serialization/ASTReader.cpp
+++ b/clang/lib/Serialization/ASTReader.cpp
@@ -8125,10 +8125,7 @@ void ASTReader::finishPendingActions() {
     }
 
     // Perform any pending declaration updates.
-    //
-    // Don't do this if we have known-incomplete redecl chains: it relies on
-    // being able to walk redeclaration chains.
-    while (PendingDeclChains.empty() && !PendingUpdateRecords.empty()) {
+    while (!PendingUpdateRecords.empty()) {
       auto Update = PendingUpdateRecords.pop_back_val();
       ReadingKindTracker ReadingKind(Read_Decl, *this);
       loadDeclUpdateRecords(Update.first, Update.second);