1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Frontend/ASTUnit.cpp b/lib/Frontend/ASTUnit.cpp
index 1160df15a9201..83731c0d39e20 100644
--- a/lib/Frontend/ASTUnit.cpp
+++ b/lib/Frontend/ASTUnit.cpp
@@ -1259,6 +1259,7 @@ ASTUnit::getMainBufferWithPrecompiledPreamble(
       Preamble.reset();
       PreambleDiagnostics.clear();
       TopLevelDeclsInPreamble.clear();
+      PreambleSrcLocCache.clear();
       PreambleRebuildCounter = 1;
     }
   }