https://bugs.llvm.org/show_bug.cgi?id=48333
Florian Hahn <florian_h...@apple.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
CC| |florian_h...@apple.com
--- Comment #1 from Florian Hahn <florian_h...@apple.com> ---
I think the program contains at least 2 cases of UB (try -fsanitize=undefined).
d = -19:
* negative shift in `*f = (f == f) >> *f;`
* negative index for `c = b[d];`
I strongly suspect that is the source of the differences with optimizations. I
tried with d = 1 and the test produces consistent result. Please re-open in
case I missed something or if there's a non-UB version of the original program
that shows the issue.
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