Accept #pragma warning(push, 0) without warning
This partially addresses PR17435, but it doesn't actually implement the
pragma. If we implement it, we should map levels 1-4 to something like
-Wall and level 0 to something like -w.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191833 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PrintPreprocessedOutput.cpp b/lib/Frontend/PrintPreprocessedOutput.cpp
index ecdfb09..3545d70 100644
--- a/lib/Frontend/PrintPreprocessedOutput.cpp
+++ b/lib/Frontend/PrintPreprocessedOutput.cpp
@@ -528,7 +528,7 @@
startNewLineIfNeeded();
MoveToLine(Loc);
OS << "#pragma warning(push";
- if (Level)
+ if (Level >= 0)
OS << ", " << Level;
OS << ')';
setEmittedDirectiveOnThisLine();