[Preprocessor] Preserve #pragma clang assume_nonnull in preprocessed output

Patch by Zbigniew Sarbinowski!

Differential Revision: https://reviews.llvm.org/D37861

llvm-svn: 314364

1 files changed, 5 insertions, 0 deletions

diff --git a/clang/lib/Lex/Pragma.cpp b/clang/lib/Lex/Pragma.cpp
index bf2363a0a6f..b5d0f939549 100644
--- a/clang/lib/Lex/Pragma.cpp
+++ b/clang/lib/Lex/Pragma.cpp
@@ -1725,6 +1725,7 @@ struct PragmaAssumeNonNullHandler : public PragmaHandler {
 
     // The start location we want after processing this.
     SourceLocation NewLoc;
+    PPCallbacks *Callbacks = PP.getPPCallbacks();
 
     if (IsBegin) {
       // Complain about attempts to re-enter an audit.
@@ -1733,6 +1734,8 @@ struct PragmaAssumeNonNullHandler : public PragmaHandler {
         PP.Diag(BeginLoc, diag::note_pragma_entered_here);
       }
       NewLoc = Loc;
+      if (Callbacks)
+        Callbacks->PragmaAssumeNonNullBegin(NewLoc);
     } else {
       // Complain about attempts to leave an audit that doesn't exist.
       if (!BeginLoc.isValid()) {
@@ -1740,6 +1743,8 @@ struct PragmaAssumeNonNullHandler : public PragmaHandler {
         return;
       }
       NewLoc = SourceLocation();
+      if (Callbacks)
+        Callbacks->PragmaAssumeNonNullEnd(NewLoc);
     }
 
     PP.setPragmaAssumeNonNullLoc(NewLoc);