Lex and ignore Microsoft's #pragma warning(...)
Summary:
This fixes PR17145 and avoids unknown pragma warnings.
This change does not attempt to map MSVC warning numbers to clang
warning flags. Perhaps in the future we will implement a mapping for
some common subset of Microsoft warnings, but for now we don't.
Reviewers: rsmith
CC: cfe-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D1652
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190726 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PrintPreprocessedOutput.cpp b/lib/Frontend/PrintPreprocessedOutput.cpp
index e0ec08f..3e45fc7 100644
--- a/lib/Frontend/PrintPreprocessedOutput.cpp
+++ b/lib/Frontend/PrintPreprocessedOutput.cpp
@@ -152,6 +152,10 @@
StringRef Namespace);
virtual void PragmaDiagnostic(SourceLocation Loc, StringRef Namespace,
diag::Mapping Map, StringRef Str);
+ virtual void PragmaWarning(SourceLocation Loc, StringRef WarningSpec,
+ ArrayRef<int> Ids);
+ virtual void PragmaWarningPush(SourceLocation Loc, int Level);
+ virtual void PragmaWarningPop(SourceLocation Loc);
bool HandleFirstTokOnLine(Token &Tok);
@@ -507,6 +511,36 @@
setEmittedDirectiveOnThisLine();
}
+void PrintPPOutputPPCallbacks::PragmaWarning(SourceLocation Loc,
+ StringRef WarningSpec,
+ ArrayRef<int> Ids) {
+ startNewLineIfNeeded();
+ MoveToLine(Loc);
+ OS << "#pragma warning(" << WarningSpec << ':';
+ for (ArrayRef<int>::iterator I = Ids.begin(), E = Ids.end(); I != E; ++I)
+ OS << ' ' << *I;
+ OS << ')';
+ setEmittedDirectiveOnThisLine();
+}
+
+void PrintPPOutputPPCallbacks::PragmaWarningPush(SourceLocation Loc,
+ int Level) {
+ startNewLineIfNeeded();
+ MoveToLine(Loc);
+ OS << "#pragma warning(push";
+ if (Level)
+ OS << ", " << Level;
+ OS << ')';
+ setEmittedDirectiveOnThisLine();
+}
+
+void PrintPPOutputPPCallbacks::PragmaWarningPop(SourceLocation Loc) {
+ startNewLineIfNeeded();
+ MoveToLine(Loc);
+ OS << "#pragma warning(pop)";
+ setEmittedDirectiveOnThisLine();
+}
+
/// HandleFirstTokOnLine - When emitting a preprocessed file in -E mode, this
/// is called for the first token on each new line. If this really is the start
/// of a new logical line, handle it and return true, otherwise return false.