[Bug tree-optimization/82494] UBSAN in gcc/tree-data-ref.c:3427:16: runtime error: signed integer overflow: 131072 * -131072 cannot be represented in type 'int'

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82494

David Binderman <dcb314 at hotmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dcb314 at hotmail dot com

--- Comment #2 from David Binderman <dcb314 at hotmail dot com> ---
I tried a -fsanitize=undefined build of today's gcc trunk with -O3
and the runtime errors I found are:

$ grep error: mk.out
../../trunk/gcc/tree-data-ref.c:3640:26: runtime error: signed integer
overflow: 9223372036854775807 - -1 cannot be represented in type 'long int [3]'
../../trunk/gcc/tree-data-ref.c:3642:52: runtime error: signed integer
overflow: -9223372036854775808 - 1 cannot be represented in type 'long int [3]'
$