[llvm-bugs] [Bug 38950] New: Warning for unary minus used with unsigned type

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=38950

            Bug ID: 38950
           Summary: Warning for unary minus used with unsigned type
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Static Analyzer
          Assignee: dcoughlin at apple.com
          Reporter: david.bolvansky at gmail.com
                CC: llvm-bugs at lists.llvm.org

unsigned foo()
{
   unsigned a = 1;
   return -a;
}

Clang issues no warning.

MSVC produces
<source>(8): warning C4146: unary minus operator applied to unsigned type,
result still unsigned

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