[llvm-bugs] [Bug 45402] New: __builtin_memcmp not executing properly in constexpr

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=45402

            Bug ID: 45402
           Summary: __builtin_memcmp not executing properly in constexpr
           Product: clang
           Version: 10.0
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: rianquinn at gmail.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org,
                    neeilans at live.com, richard-llvm at metafoo.co.uk

I describe the bug in detail here:
https://stackoverflow.com/questions/60994670/is-this-a-bug-in-how-clang-implements-builtin-memcmp

Basically, __builtin_memcmp seems to produce a buffer overrun when executed
from a constexpr.

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