Added operator overloading for unary operators, post-increment, and

post-decrement, including support for generating all of the built-in
operator candidates for these operators. 

C++ and C have different rules for the arguments to the builtin unary
'+' and '-'. Implemented both variants in Sema::ActOnUnaryOp.

In C++, pre-increment and pre-decrement return lvalues. Update
Expr::isLvalue accordingly.

llvm-svn: 59638

1 files changed, 2 insertions, 1 deletions

diff --git a/clang/lib/Parse/ParseStmt.cpp b/clang/lib/Parse/ParseStmt.cpp
index 49b81809048..221ad90273d 100644
--- a/clang/lib/Parse/ParseStmt.cpp
+++ b/clang/lib/Parse/ParseStmt.cpp
@@ -386,7 +386,8 @@ Parser::StmtResult Parser::ParseCompoundStatementBody(bool isStmtExpr) {
         }
         
         // Add the __extension__ node to the AST.
-        Res = Actions.ActOnUnaryOp(ExtLoc, tok::kw___extension__, Res.Val);
+        Res = Actions.ActOnUnaryOp(CurScope, ExtLoc, tok::kw___extension__, 
+                                   Res.Val);
         if (Res.isInvalid)
           continue;