[llvm-bugs] [Bug 36008] New: Regression (r316268): erroneous -Wsign-compare for typeof(enum T) and typeof(enumValue)

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=36008

            Bug ID: 36008
           Summary: Regression (r316268): erroneous -Wsign-compare for
                    typeof(enum T) and typeof(enumValue)
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangb...@nondot.org
          Reporter: arpha...@gmail.com
                CC: llvm-bugs@lists.llvm.org

In LLVM 6 Clang reports -Wsign-compare:

comparison of integers of different signs: 'typeof (lhs)' (aka 'enum EnumTest')
and 'typeof (kValue)' (aka 'int')

For the following sample:

enum EnumTest {
    kValue = 0,
};


void foo(enum EnumTest lhs) {
  __typeof__(lhs) x = lhs;
  __typeof__(kValue) y = kValue;
  x == y;  
}


This is a regression after r316268.

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