[cfe-commits] r53819 - /cfe/trunk/lib/Sema/Sema.cpp

[Chris Lattner]

Author: lattner
Date: Sun Jul 20 23:09:54 2008
New Revision: 53819

URL: http://llvm.org/viewvc/llvm-project?rev=53819&view=rev
Log:
Fix a crash that can happen when you have typedefs for pointers to
interfaces.  Just because they x->isPointerType() doesn't mean it is
valid to just cast to a pointertype.  We have to handle typedefs etc
as well.

Modified:
    cfe/trunk/lib/Sema/Sema.cpp

Modified: cfe/trunk/lib/Sema/Sema.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/Sema.cpp?rev=53819&r1=53818&r2=53819&view=diff

==============================================================================
--- cfe/trunk/lib/Sema/Sema.cpp (original)
+++ cfe/trunk/lib/Sema/Sema.cpp Sun Jul 20 23:09:54 2008
@@ -35,13 +35,14 @@
   if (!type->isPointerType())
     return false;
   
+  // Check to see if this is 'id' or 'Class', both of which are typedefs for
+  // pointer types.  This looks for the typedef specifically, not for the
+  // underlying type.
   if (type == Context.getObjCIdType() || type == Context.getObjCClassType())
     return true;
   
-  if (type->isPointerType()) {
-    PointerType *pointerType = static_cast<PointerType*>(type.getTypePtr());
-    type = pointerType->getPointeeType();
-  }
+  const PointerType *pointerType = type->getAsPointerType();
+  type = pointerType->getPointeeType();
   return type->isObjCInterfaceType() || type->isObjCQualifiedIdType();
 }