objectiveC (take two): don't warn when in -Wselector mode and

an unimplemented selector is consumed by
"respondsToSelector:". // rdar://12938616


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173179 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 24 deletions

diff --git a/lib/Parse/ParseObjc.cpp b/lib/Parse/ParseObjc.cpp
index 47c22d9bd0..65bfd1c830 100644
--- a/lib/Parse/ParseObjc.cpp
+++ b/lib/Parse/ParseObjc.cpp
@@ -2419,14 +2419,12 @@ Parser::ParseObjCMessageExpressionBody(SourceLocation LBracLoc,
   // Parse objc-selector
   SourceLocation Loc;
   IdentifierInfo *selIdent = ParseObjCSelectorPiece(Loc);
-
+  
   SmallVector<IdentifierInfo *, 12> KeyIdents;
   SmallVector<SourceLocation, 12> KeyLocs;
   ExprVector KeyExprs;
 
   if (Tok.is(tok::colon)) {
-    bool RespondsToSelector =
-           selIdent && selIdent->isStr("respondsToSelector");
     while (1) {
       // Each iteration parses a single keyword argument.
       KeyIdents.push_back(selIdent);
@@ -2465,22 +2463,7 @@ Parser::ParseObjCMessageExpressionBody(SourceLocation LBracLoc,
         return ExprError();
       }
       
-      ExprResult Res;
-      if (RespondsToSelector) {
-        if (Tok.is(tok::at)) {
-          // Special handling for 'respondsToSelector:' which must not warn
-          // on use of @selector expression as its sole argument.
-          Token AfterAt = GetLookAheadToken(1);
-          if (AfterAt.isObjCAtKeyword(tok::objc_selector)) {
-            SourceLocation AtLoc = ConsumeToken();
-            Res = ParseObjCSelectorExpression(AtLoc, false);
-          }
-        }
-        RespondsToSelector = false;
-      }
-      if (!Res.get())
-        Res = ParseAssignmentExpression();
-      
+      ExprResult Res(ParseAssignmentExpression());
       if (Res.isInvalid()) {
         // We must manually skip to a ']', otherwise the expression skipper will
         // stop at the ']' when it skips to the ';'.  We want it to skip beyond
@@ -2560,7 +2543,7 @@ Parser::ParseObjCMessageExpressionBody(SourceLocation LBracLoc,
     SkipUntil(tok::r_square);
     return ExprError();
   }
-
+  
   SourceLocation RBracLoc = ConsumeBracket(); // consume ']'
 
   unsigned nKeys = KeyIdents.size();
@@ -2814,8 +2797,7 @@ Parser::ParseObjCProtocolExpression(SourceLocation AtLoc) {
 
 ///     objc-selector-expression
 ///       @selector '(' objc-keyword-selector ')'
-ExprResult Parser::ParseObjCSelectorExpression(SourceLocation AtLoc,
-                                               bool WarnSelector) {
+ExprResult Parser::ParseObjCSelectorExpression(SourceLocation AtLoc) {
   SourceLocation SelectorLoc = ConsumeToken();
 
   if (Tok.isNot(tok::l_paren))
@@ -2873,8 +2855,7 @@ ExprResult Parser::ParseObjCSelectorExpression(SourceLocation AtLoc,
   Selector Sel = PP.getSelectorTable().getSelector(nColons, &KeyIdents[0]);
   return Actions.ParseObjCSelectorExpression(Sel, AtLoc, SelectorLoc,
                                              T.getOpenLocation(),
-                                             T.getCloseLocation(),
-                                             WarnSelector);
+                                             T.getCloseLocation());
  }
 
 void Parser::ParseLexedObjCMethodDefs(LexedMethod &LM, bool parseMethod) {