[LLVMbugs] [Bug 17653] New: Template Objective-C++ struct error: bad receiver type

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=17653

            Bug ID: 17653
           Summary: Template Objective-C++ struct error: bad receiver type
           Product: clang
           Version: unspecified
          Hardware: Macintosh
                OS: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: dfarler at apple.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Compiling OpenSource WebKit with trunk clang fails with errors such as:

Source/JavaScriptCore/API/ObjCCallbackFunction.mm:189:10: error: bad receiver
type 'RetainPtr'
        [m_conversionInvocation invokeWithTarget:value];
         ^~~~~~~~~~~~~~~~~~~~~~

RetainPtr is a reference counted wrapper.

Steps to reproduce:

Compile the following reduction (from Anders Carlsson)


template<typename T> struct RetainPtr {
explicit operator T*() const;
};

@interface A
- (void)b;
@end

void f(RetainPtr<A> a)
{
    [a b];
}

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