[Bug c/123425] New: GCC trunk ICEs in gimplification when calling a function cast from an invalid void[ ] parameter declaration, leading to an error_mark type in useless_type_conversion_p

[aamadu.olander at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123425

            Bug ID: 123425
           Summary: GCC trunk ICEs in gimplification when calling a
                    function cast from an invalid void[ ] parameter
                    declaration, leading to an error_mark type in
                    useless_type_conversion_p
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: aamadu.olander at gmail dot com
  Target Milestone: ---

Created attachment 63232
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63232&action=edit
The file contains the output of -freport-bug switch

I have generated a testcase using a fuzzer and here's the output when I run the
latest version of gcc to compile the c code.