Per advice that Doug Gregor gave me several months ago, clean up the

implementation of '#pragma unused' by not constructing intermediate
DeclRefExprs, but instead do the name lookup directly.  The
implementation is greatly simplified.

Along the way, degrade '#pragma unused(undeclaredvariable)' to a
warning instead of being a hard error.  This implements:

<rdar://problem/6761874> [sema] allow #pragma unused to reference undefined variable (with warning)

llvm-svn: 78019

1 files changed, 2 insertions, 1 deletions

diff --git a/clang/lib/Sema/Sema.h b/clang/lib/Sema/Sema.h
index 0dbb9f81d1e..2a77f21a2d4 100644
--- a/clang/lib/Sema/Sema.h
+++ b/clang/lib/Sema/Sema.h
@@ -2953,7 +2953,8 @@ public:
                                SourceLocation RParenLoc);
   
   /// ActOnPragmaUnused - Called on well-formed '#pragma unused'.
-  virtual void ActOnPragmaUnused(ExprTy **Exprs, unsigned NumExprs,
+  virtual void ActOnPragmaUnused(const Token *Identifiers,
+                                 unsigned NumIdentifiers, Scope *curScope,
                                  SourceLocation PragmaLoc, 
                                  SourceLocation LParenLoc,
                                  SourceLocation RParenLoc);