[LLVMbugs] [Bug 19597] New: Visibility attribute ignored on variable templates

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=19597

            Bug ID: 19597
           Summary: Visibility attribute ignored on variable templates
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: david.majnemer at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

consider:
template <typename T> __attribute__((visibility("hidden"))) const int &x = 4;
template const int &x<void>;

codgen looks bad:
@_Z1xIvE = weak_odr constant i32* @_ZGR1xIvE, align 8

however, it works fine for non-static data members, their close relatives:
template <typename T> struct S {
  __attribute__((visibility("hidden"))) static const int &x;
};
template <typename T> const int &S<T>::x = 4;
template const int &S<void>::x;

@_ZN1SIvE1xE = weak_odr hidden constant i32* @_ZGRN1SIvE1xE, align 8

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