https://issues.dlang.org/show_bug.cgi?id=23005

          Issue ID: 23005
           Summary: importC: 'alignof' or 'mangleof' as member name gives
                    redefinition error
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Keywords: ImportC, rejects-valid
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: duser@neet.fi
                CC: duser@neet.fi

struct S { int alignof, mangleof; };
union U { int alignof, mangleof; };
enum E { alignof, mangleof };

test.c(1): Error: variable `test.S.alignof` `.alignof` property cannot be
redefined
test.c(1): Error: variable `test.S.mangleof` `.mangleof` property cannot be
redefined
test.c(2): Error: variable `test.U.alignof` `.alignof` property cannot be
redefined
test.c(2): Error: variable `test.U.mangleof` `.mangleof` property cannot be
redefined
test.c(3): Error: enum member `test.E.alignof` `.alignof` property cannot be
redefined
test.c(3): Error: enum member `test.E.mangleof` `.mangleof` property cannot be
redefined

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