Index: lib/Serialization/ASTReaderStmt.cpp
===================================================================
--- lib/Serialization/ASTReaderStmt.cpp
+++ lib/Serialization/ASTReaderStmt.cpp
@@ -147,7 +147,7 @@
 }
 
 void ASTStmtReader::VisitStmt(Stmt *S) {
-  assert(Record.getIdx() == NumStmtFields && "Incorrect statement field count");
+  assert(Record.getIdx() == 0 && "Incorrect statement field count");
 }
 
 void ASTStmtReader::VisitNullStmt(NullStmt *S) {