[cfe-commits] r152420 - in /cfe/trunk: lib/Sema/SemaDecl.cpp test/SemaObjC/debugger-cast-result-to-id.m test/SemaObjCXX/debugger-cast-result-to-id.mm

[Fariborz Jahanian]

Author: fjahanian
Date: Fri Mar  9 12:47:16 2012
New Revision: 152420

URL: http://llvm.org/viewvc/llvm-project?rev=152420&view=rev
Log:
lldb support: under debugger support flag, when sending message
to forward class, and assigning to an 'id' type var, message
sends default to 'id'. // rdar"//10988847


Modified:
    cfe/trunk/lib/Sema/SemaDecl.cpp
    cfe/trunk/test/SemaObjC/debugger-cast-result-to-id.m
    cfe/trunk/test/SemaObjCXX/debugger-cast-result-to-id.mm

Modified: cfe/trunk/lib/Sema/SemaDecl.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDecl.cpp?rev=152420&r1=152419&r2=152420&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaDecl.cpp (original)
+++ cfe/trunk/lib/Sema/SemaDecl.cpp Fri Mar  9 12:47:16 2012
@@ -6209,6 +6209,18 @@
   // Get the decls type and save a reference for later, since
   // CheckInitializerTypes may change it.
   QualType DclT = VDecl->getType(), SavT = DclT;
+  
+  // Top-level message sends default to 'id' when we're in a debugger
+  // and we are assigning it to a variable of 'id' type.
+  if (getLangOptions().DebuggerCastResultToId && DclT->isObjCIdType())
+    if (Init->getType() == Context.UnknownAnyTy && isa<ObjCMessageExpr>(Init)) {
+      ExprResult Result = forceUnknownAnyToType(Init, Context.getObjCIdType());
+      if (Result.isInvalid()) {
+        VDecl->setInvalidDecl();
+        return;
+      }
+      Init = Result.take();
+    }
 
   // Perform the initialization.
   if (!VDecl->isInvalidDecl()) {

Modified: cfe/trunk/test/SemaObjC/debugger-cast-result-to-id.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/debugger-cast-result-to-id.m?rev=152420&r1=152419&r2=152420&view=diff
==============================================================================
--- cfe/trunk/test/SemaObjC/debugger-cast-result-to-id.m (original)
+++ cfe/trunk/test/SemaObjC/debugger-cast-result-to-id.m Fri Mar  9 12:47:16 2012
@@ -7,3 +7,10 @@
   (void)(int)[[test0 unknownMethod] otherUnknownMethod];;
   (void)(id)[[test1() unknownMethod] otherUnknownMethod];
 }
+
+// rdar://10988847
+ at class NSString; // expected-note {{forward declaration of class here}}
+
+void rdar10988847() {
+  id s = [NSString stringWithUTF8String:"foo"]; // expected-warning {{receiver 'NSString' is a forward class and corresponding @interface may not exist}}
+}

Modified: cfe/trunk/test/SemaObjCXX/debugger-cast-result-to-id.mm
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjCXX/debugger-cast-result-to-id.mm?rev=152420&r1=152419&r2=152420&view=diff
==============================================================================
--- cfe/trunk/test/SemaObjCXX/debugger-cast-result-to-id.mm (original)
+++ cfe/trunk/test/SemaObjCXX/debugger-cast-result-to-id.mm Fri Mar  9 12:47:16 2012
@@ -7,3 +7,11 @@
     [x foo];
   }
 }
+
+// rdar://10988847
+ at class NSString; // expected-note {{forward declaration of class here}}
+namespace test1 {
+  void rdar10988847() {
+    id s = [NSString stringWithUTF8String:"foo"]; // expected-warning {{receiver 'NSString' is a forward class and corresponding @interface may not exist}}
+  }
+}