[Bug tree-optimization/82491] UBSAN in gcc/gimple-fold.c:6187:6: runtime error: signed integer overflow: 9223372036854775807 * 8 cannot be represented in type 'long int'

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82491

rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |rsandifo at gcc dot gnu.org

--- Comment #4 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 
---
(In reply to Martin Liška from comment #3)
> I haven't finished that before poly-int went it.
> May I please ask Richard Sandiford to help me with the version of the patch
> after we have poly-int in trunk?

The poly_int version of the comment #1 code would be something like:

  poly_offset_int boff = *bit_offset + mem_ref_offset (base) * BITS_PER_UNIT;
  if (!boff.to_shwi (bit_offset))
    return NULL_TREE;