[Bug c++/128495] New: internal compiler error: tree check: expected record_type or union_type or qual_union_type, have pointer_type in build_op_subscript, at cp/call.cc

[0599jiangyc at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128495

            Bug ID: 128495
           Summary: internal compiler error: tree check: expected
                    record_type or union_type or qual_union_type, have
                    pointer_type in build_op_subscript, at cp/call.cc
           Product: gcc
           Version: 17.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: 0599jiangyc at gmail dot com
  Target Milestone: ---

The following code:
```cpp
struct X { };
void foo (double *a, X x) { a[0, x]; }
```

Resulted in this output:
```
<source>:2:35: internal compiler error: tree check: expected record_type or
union_type or qual_union_type, have pointer_type in build_op_subscript, at
cp/call.cc:7842
```

Trunk reproducer (`-std=c++23`): https://godbolt.org/z/zr158GTeM