[LLVMbugs] [Bug 7205] New: Obj-C++ methods with arguments that reference C++ objects fail under Clang
bugzilla-daemon at llvm.org
bugzilla-daemon at llvm.org
Sat May 22 16:41:24 PDT 2010
http://llvm.org/bugs/show_bug.cgi?id=7205
Summary: Obj-C++ methods with arguments that reference C++
objects fail under Clang
Product: clang
Version: 2.7
Platform: Macintosh
OS/Version: MacOS X
Status: NEW
Severity: normal
Priority: P
Component: C++
AssignedTo: unassignedclangbugs at nondot.org
ReportedBy: bradmarston at mac.com
CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com
Of the following two Obj-C methods, only the first compiles under Clang
(llvm-2.7) but both compile properly under gcc4.2-llvm:
[objcObject methodByPointer:cppObject];
[objcObject methodByReference:*cppObject];
where the Obj-C++ methods are declared as:
- (void)methodByPointer:(cppClass *)object;
- (void)methodByReference:(cppClass &)object;
The error returned by Clang for the second method is:
/Users/jbm/Desktop/Obj-C++/Test/Test.mm:17:0
/Users/jbm/Desktop/Obj-C++/Test/Test.mm:17:35: error: incompatible type sending
'class cppClass', expected 'class cppClass &'
I have attached an Xcode project that illustrates this with minimal lines of
code. When compiled under gcc4.2 both methods correctly access the cppObject
to return the number 42.
Question: Is this an ambiguity in the specification of Obj-C++?
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