[LLVMbugs] [Bug 9440] New: Clang doesn't trigger template instantiation to find friend function definitions (ADL)

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9440

           Summary: Clang doesn't trigger template instantiation to find
                    friend function definitions (ADL)
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: schaub.johannes at googlemail.com
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com


Clang currently rejects this:

  template<typename T>
  struct A {
    friend void f(A *) { }
  };

  int main() {
    f((A<int>*)0);
  }

main1.cpp:7:5: error: use of undeclared identifier 'f'
    f((A<int>*)0);
    ^

Closed issue report 34 reassured that this code is valid.

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