[llvm-bugs] [Bug 46727] New: Clang rejects valid enum definition with "reference to local variable declared in enclosing function"

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=46727

            Bug ID: 46727
           Summary: Clang rejects valid enum definition with "reference to
                    local variable declared in enclosing function"
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: haoxintu at gmail.com
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

Hi, all.

This code, test.cc, is a valid code I guess, but Clang rejects to compile it.

$cat test.cc
int foo (){
    int var = 0;
    enum E { e1 = 1 ? 1 : var};
    return e1;
}


$clang++ test.cc
test.cc:3:27: error: reference to local variable 'var' declared in enclosing
function 'foo'
    enum E { e1 = 1 ? 1 : var};
                          ^
test.cc:2:9: note: 'var' declared here
    int var = 0;
        ^
1 error generated.

While in other mainstream compilers, gcc, icc, or msvc, they all accept this
code.

Every Clang version from 4.0 onwards behaves the same (I tested in Godbolt, and
I didn't test anything older).

Thanks,
Haoxin

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