[llvm-bugs] [Bug 52361] wrong code at -O2 code on MacOSX with clang 13.0.0

via llvm-bugs llvm-bugs at lists.llvm.org
Sat Oct 30 06:17:06 PDT 2021


Roman Lebedev <lebedev.ri at gmail.com> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID
                 CC|                            |lebedev.ri at gmail.com

--- Comment #1 from Roman Lebedev <lebedev.ri at gmail.com> ---
This looks like UB to me. https://godbolt.org/z/5M4eP8h36

/app/example.cpp:28:18: runtime error: reference binding to misaligned address
0x0000000001e2 for type 'const Name', which requires 8 byte alignment
0x0000000001e2: note: pointer points here
<memory cannot be printed>
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /app/example.cpp:28:18

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