[LLVMbugs] [Bug 24272] New: Inconsistency with respect to using declaration ordering

[bugzilla-daemon at llvm.org]

https://llvm.org/bugs/show_bug.cgi?id=24272

            Bug ID: 24272
           Summary: Inconsistency with respect to using declaration
                    ordering
           Product: clang
           Version: trunk
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: anders.granlund.0 at gmail.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Why does clang accept this?

  namespace M { struct i {}; }
  namespace N { static int i = 1; }
  using N::i;
  using M::i;
  int main() { sizeof (i); }

but not this?

  namespace M { struct i {}; }
  namespace N { static int i = 1; }
  using M::i;
  using N::i;
  int main() { sizeof (i); }

This seems inconsistent. For comparison GCC accepts both of these programs.

I tired it with the following command line:

  clang++ prog.cc -std=c++14 -pedantic-errors

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