[Bug c++/128531] New: internal compiler error: in cp_parser_expression_statement, at cp/parser.cc

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128531

            Bug ID: 128531
           Summary: internal compiler error: in
                    cp_parser_expression_statement, at cp/parser.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
template <typename... T> struct A { void f (T p) { p + 1; } };
```

Resulted in this output:
```
<source>:1:56: internal compiler error: in cp_parser_expression_statement, at
cp/parser.cc:14945
```

Trunk reproducer (`-Wno-template-body`): https://godbolt.org/z/ozWcP8h1j