[llvm-bugs] [Bug 44708] New: clang++ accepts invalid code

via llvm-bugs llvm-bugs at lists.llvm.org
Wed Jan 29 08:50:32 PST 2020


            Bug ID: 44708
           Summary: clang++ accepts invalid code
           Product: clang
           Version: 9.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: grzejabl at gmail.com
                CC: blitzrakete at gmail.com, dgregor at apple.com,
                    erik.pilkington at gmail.com, llvm-bugs at lists.llvm.org,
                    richard-llvm at metafoo.co.uk

The following code:

class A
  friend class B;
  int m;

class B
  friend void f(A* p) { p->m = 32; }

compiles in clang version 9.0.0-2. If the function body is defined outside of
the class, the compiler correctly issues an error about not being able to
access the private member.

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