https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71567

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

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

--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
-fsanitize=undefined can be used to find some of these.

This enables:

-fsanitize=bounds
This option enables instrumentation of array bounds. Various out of bounds
accesses are detected. Flexible array members, flexible array member-like
arrays, and initializers of variables with static storage are not instrumented. 

Note the last part of it too because without dummy, GCC considers the array as
"flexible array member-like arrays"

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