[Bug tree-optimization/100509] ICE at -O3: in fold_convert_loc with variable (attribute) alias of different types

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100509

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot 
gnu.org
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2021-05-11

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I will have a look.  The code is border-line valid only, the alias ties objects
of incompatible type.  It goes wrong during fold_gimple_assign which eventually
calls get_symbol_constant_value.