[LLVMbugs] [Bug 13737] New: MS compatibility: reference members are allowed in unions

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Fri Aug 31 06:51:43 PDT 2012


             Bug #: 13737
           Summary: MS compatibility: reference members are allowed in
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: avakar at ratatanek.cz
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

vc10 compiles the following without errors, even when language extensions are

    union X {
    int & a;

Clang should allow this construct as well when in -fms-compatibility mode.

Note that the type X can't be instantiated, but you can reinterpret_cast a
pointer to `X*`.

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