[llvm-bugs] [Bug 31650] New: Definition of llvm::None is incorrect

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31650

            Bug ID: 31650
           Summary: Definition of llvm::None is incorrect
           Product: libraries
           Version: trunk
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Support Libraries
          Assignee: unassignedbugs at nondot.org
          Reporter: zeratul976 at hotmail.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

In include/llvm/ADT/None.h, llvm::None is defined as follows:

namespace llvm {
  enum class NoneType { None };
  const NoneType None = None;
}

Clearly the intention is for the initializer to name the enumerator 'None', but
it actually names the variable 'None', which means the resulting of value of
the variable 'None' is unspecified (rather than the intended NoneType::None).

The definition should instead be:

namespace llvm {
  enum class NoneType { None };
  const NoneType None = NoneType::None;
}

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