From ba5ee4da1dcb6aad861e63467c8fc9ddd69bf8f7 Mon Sep 17 00:00:00 2001 From: Lubos Lunak Date: Sat, 20 Jul 2013 14:30:01 +0000 Subject: avoid bogus warnings about "unknown" pragmas with -frewrite-includes (pr#14831) llvm-svn: 186764 --- clang/lib/Rewrite/Frontend/InclusionRewriter.cpp | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'clang/lib') diff --git a/clang/lib/Rewrite/Frontend/InclusionRewriter.cpp b/clang/lib/Rewrite/Frontend/InclusionRewriter.cpp index 0c3269a0472..93ad9b88d60 100644 --- a/clang/lib/Rewrite/Frontend/InclusionRewriter.cpp +++ b/clang/lib/Rewrite/Frontend/InclusionRewriter.cpp @@ -16,6 +16,7 @@ #include "clang/Basic/SourceManager.h" #include "clang/Frontend/PreprocessorOutputOptions.h" #include "clang/Lex/HeaderSearch.h" +#include "clang/Lex/Pragma.h" #include "clang/Lex/Preprocessor.h" #include "llvm/ADT/SmallString.h" #include "llvm/Support/raw_ostream.h" @@ -503,6 +504,13 @@ void clang::RewriteIncludesInInput(Preprocessor &PP, raw_ostream *OS, InclusionRewriter *Rewrite = new InclusionRewriter(PP, *OS, Opts.ShowLineMarkers); PP.addPPCallbacks(Rewrite); + // Ignore all pragmas, otherwise there will be warnings about unknown pragmas + // (because there's nothing to handle them). + PP.AddPragmaHandler(new EmptyPragmaHandler()); + // Ignore also all pragma in all namespaces created + // in Preprocessor::RegisterBuiltinPragmas(). + PP.AddPragmaHandler("GCC", new EmptyPragmaHandler()); + PP.AddPragmaHandler("clang", new EmptyPragmaHandler()); // First let the preprocessor process the entire file and call callbacks. // Callbacks will record which #include's were actually performed. -- cgit v1.2.3