Compiler Incorrectly Allows Protocol Methods on __kindof Type When Protocol is Visible

[tripleCC]

Description:
The Clang compiler incorrectly allows sending protocol-defined messages to __kindof types when the protocol is visible in the current scope, even if the base type doesn't conform to that protocol.

Steps to Reproduce:

1. Case A (Incorrect Behavior):

   @protocol A <NSObject>
   - (void)aaa;
   @end
   
   __kindof UIView *v;
   [v aaa]; // Compiles without error (UNEXPECTED)

   Actual Result: Compilation succeeds despite UIView not conforming to protocol A.

2. Case B (Correct Behavior):

   __kindof UIView *v;
   [v aaa]; // Compiler error (EXPECTED)

   Actual Result: Properly errors with No known instance method for selector 'aaa'.

Expected Behavior:
Both cases should fail compilation with No known instance method for selector 'aaa' since:

• __kindof UIView * represents UIView or its subclasses
• UIView doesn't implement -aaa
• Protocol visibility shouldn't affect method availability for unrelated types

Impact:
Creates false sense of type safety with __kindof when unrelated protocols are visible, potentially leading to runtime crashes.

Environment:

• Clang version: [16.0.0]
• Xcode: 16.0