[llvm-bugs] [Bug 40921] New: Improve -Wtautological-constant-in-range-compare

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=40921

            Bug ID: 40921
           Summary: Improve -Wtautological-constant-in-range-compare
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: david.bolvansky at gmail.com
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

int test (int x) 
{
  if ((long long)x <= 0x123456789ABCLL) // GCC warns with -Wtype-limits
    return 1;
  else 
    return 0;
}

Clang does not warn with -Wtautological-constant-in-range-compare nor
-Weverything (root issue).

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