From: Fariborz Jahanian <fjahanian@apple.com>
Date: Tue, 16 Jun 2009 16:25:00 +0000 (+0000)
Subject: Implements -Wundeclared-selector for ObjC.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7ff22ded2221f442b1f8ff78172938d04ec8c926;p=clang

Implements -Wundeclared-selector for ObjC.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73495 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/clang/Basic/DiagnosticSemaKinds.td b/include/clang/Basic/DiagnosticSemaKinds.td
index fa4f430591..32be6f1caa 100644
--- a/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/include/clang/Basic/DiagnosticSemaKinds.td
@@ -241,6 +241,9 @@ def error_property_implemented : Error<"property %0 is already implemented">;
 def warn_objc_property_attr_mutually_exclusive : Warning<
   "property attributes '%0' and '%1' are mutually exclusive">,
   InGroup<DiagGroup<"readonly-setter-attrs">>, DefaultIgnore;
+def warn_undeclared_selector : Warning<
+  "undeclared selector %0">,
+  InGroup<DiagGroup<"undeclared-selector">>, DefaultIgnore;
 
 // C++ declarations
 def err_static_assert_expression_is_not_constant : Error<
diff --git a/lib/Sema/SemaExprObjC.cpp b/lib/Sema/SemaExprObjC.cpp
index b6cf9d8e73..71033b4eed 100644
--- a/lib/Sema/SemaExprObjC.cpp
+++ b/lib/Sema/SemaExprObjC.cpp
@@ -130,6 +130,14 @@ Sema::ExprResult Sema::ParseObjCSelectorExpression(Selector Sel,
                                                    SourceLocation SelLoc,
                                                    SourceLocation LParenLoc,
                                                    SourceLocation RParenLoc) {
+  ObjCMethodDecl *Method = LookupInstanceMethodInGlobalPool(Sel, 
+                             SourceRange(LParenLoc, RParenLoc));
+  if (!Method)
+    Method = LookupFactoryMethodInGlobalPool(Sel,
+                                          SourceRange(LParenLoc, RParenLoc));
+  if (!Method)
+    Diag(SelLoc, diag::warn_undeclared_selector) << Sel;
+
   QualType Ty = Context.getObjCSelType();
   return new (Context) ObjCSelectorExpr(Ty, Sel, AtLoc, RParenLoc);
 }