For some reason I don't fully comprehend, the MSVC debug build will fail with a huge 50+ lines template error message if PreprocessingRecord::iterator has no operator<()

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135670 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/include/clang/Lex/PreprocessingRecord.h b/include/clang/Lex/PreprocessingRecord.h
index 7b233a07a3..22a51665b4 100644
--- a/include/clang/Lex/PreprocessingRecord.h
+++ b/include/clang/Lex/PreprocessingRecord.h
@@ -376,6 +376,10 @@ namespace clang {
         return X.Position == Y.Position;
       }
 
+      friend bool operator<(const iterator &X, const iterator &Y) {
+        return X.Position < Y.Position;
+      }
+
       friend bool operator!=(const iterator &X, const iterator &Y) {
         return X.Position != Y.Position;
       }