[llvm-bugs] [Bug 34143] Hardfault when dereferencing unaligned float

via llvm-bugs llvm-bugs at lists.llvm.org
Thu Aug 10 08:11:12 PDT 2017


Tim Northover <t.p.northover at gmail.com> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from Tim Northover <t.p.northover at gmail.com> ---
This code violates strict-aliasing and alignment requirements and so has
undefined behaviour. The most portable way to do this kind of type punning is
via a memcpy to a local inside the Read function.

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